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Leung Felix W

TitleProfessor
InstitutionUniversity of California Los Angeles
DepartmentMedicine
AddressVAMC SEP
Los Angeles CA 90095
Phone8188959395
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    Other Positions
    TitleFaculty


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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. Leung FW, Jia H. Expert endorsement, a prerequisite to general acceptance, marked a significant milestone in the history of water exchange colonoscopy. Gastrointest Endosc. 2018 Oct; 88(4):598-600. PMID: 30217238.
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    2. Cadoni S, Hassan C, Frazzoni L, Ishaq S, Leung FW. Impact of water exchange colonoscopy on endoscopy room efficiency: a systematic review and meta-analysis. Gastrointest Endosc. 2018 Jul 23. PMID: 30048649.
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    3. Hsieh YH, Leung FW. Increase your adenoma detection rate without using fancy adjunct tools. Ci Ji Yi Xue Za Zhi. 2018 Jul-Sep; 30(3):127-134. PMID: 30069119.
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    4. Jia H, Koo M, Hsieh YH, Tseng CW, Hu CT, Zhang L, Dong T, Pan Y, Leung FW. Factors Associated With Adenoma Detection in Propofol-sedated Patients. J Clin Gastroenterol. 2018 Jun 15. PMID: 29912763.
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    5. Desilets DJ, Hwang JH, Kyanam Kabir Baig KR, Leung FW, Maranki JL, Mishra G, Shah RJ, Swanstrom LL, Chak A. Gastrointestinal Endoscopy Editorial Board top 10 topics: advances in GI endoscopy in 2017. Gastrointest Endosc. 2018 May 17. PMID: 29779609.
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    6. Leung FW, Jia H. Water Exchange Versus Split-Dose Bowel Preparation and the ADR: Is WE There Yet? Dig Dis Sci. 2018 05; 63(5):1097-1099. PMID: 29450748.
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    7. Leung FW. Split-dose bowel preparation versus water exchange and adenoma detection rate: have we arrived there yet? Ann Gastroenterol. 2018 May-Jun; 31(3):253-255. PMID: 29720849.
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    8. Kang X, Zhao L, Zhu Z, Leung F, Wang L, Wang X, Luo H, Zhang L, Dong T, Li P, Chen Z, Ren G, Jia H, Guo X, Pan Y, Guo X, Fan D. Same-Day Single Dose of 2 Liter Polyethylene Glycol is Not Inferior to The Standard Bowel Preparation Regimen in Low-Risk Patients: A Randomized, Controlled Trial. Am J Gastroenterol. 2018 Apr; 113(4):601-610. PMID: 29533397.
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    9. Leung FW, Koo M, Cadoni S, Falt P, Hsieh YH, Amato A, Erriu M, Fojtik P, Gallittu P, Hu CT, Leung JW, Liggi M, Paggi S, Radaelli F, Rondonotti E, Smajstrla V, Tseng CW, Urban O. Water Exchange Produces Significantly Higher Adenoma Detection Rate Than Water Immersion: Pooled Data From 2 Multisite Randomized Controlled Trials. J Clin Gastroenterol. 2018 Mar 02. PMID: 29505552.
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    10. Leung FW. In split-dose prepared patients, water exchange could significantly improve overall and segmental bowel preparation scores and increase adenoma detection rate. Ann Gastroenterol. 2018 Mar-Apr; 31(2):127-128. PMID: 29507459.
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    11. Bayupurnama P, Ratnasari N, Indrarti F, Triwikatmani C, Maduseno S, Nurdjanah S, Leung FW. Endoscope-connected water pump with high flow rates improves the unsedated colonoscopy performance by water immersion method. Clin Exp Gastroenterol. 2018; 11:13-18. PMID: 29391819.
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    12. Leung FW. Assessment of trainees' performance in colonoscopy. Gastrointest Endosc. 2018 01; 87(1):270-271. PMID: 29241855.
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    13. Leung F, Jia H, Pan Y. Air Insufflation May Still be Ideal for Adenoma Detection. Am J Gastroenterol. 2017 Oct; 112(10):1615-1616. PMID: 28978965.
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    14. Leung FW. Incomplete resection after macroscopic radical endoscopic resection of T1 colorectal cancer-should a paradigm-changing approach to address the risk be considered? Transl Gastroenterol Hepatol. 2017; 2:69. PMID: 28905010.
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    15. Leung FW. Water Exchange to Facilitate Unsedated Colonoscopy-Reply. JAMA. 2017 08 22; 318(8):754-755. PMID: 28829870.
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    16. Leung FW. Trends in Use of Sedation for Low-Risk Endoscopy: Looking Beyond Monitored Anesthesia Care. JAMA. 2017 05 16; 317(19):2006-2007. PMID: 28510664.
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    17. Cadoni S, Falt P, Rondonotti E, Radaelli F, Fojtik P, Gallittu P, Liggi M, Amato A, Paggi S, Smajstrla V, Urban O, Erriu M, Koo M, Leung FW. Water exchange for screening colonoscopy increases adenoma detection rate: a multicenter, double-blinded, randomized controlled trial. Endoscopy. 2017 May; 49(5):456-467. PMID: 28282689.
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    18. Hsieh YH, Tseng CW, Hu CT, Koo M, Leung FW. Prospective multicenter randomized controlled trial comparing adenoma detection rate in colonoscopy using water exchange, water immersion, and air insufflation. Gastrointest Endosc. 2017 Jul; 86(1):192-201. PMID: 27988288.
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    19. Jia H, Pan Y, Guo X, Zhao L, Wang X, Zhang L, Dong T, Luo H, Ge Z, Liu J, Hao J, Yao P, Zhang Y, Ren H, Zhou W, Guo Y, Zhang W, Chen X, Sun D, Yang X, Kang X, Liu N, Liu Z, Leung F, Wu K, Fan D. Water Exchange Method Significantly Improves Adenoma Detection Rate: A Multicenter, Randomized Controlled Trial. Am J Gastroenterol. 2017 Apr; 112(4):568-576. PMID: 27922025.
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    20. Cadoni S, Falt P, Gallittu P, Liggi M, Smajstrla V, Leung FW. Impact of carbon dioxide insufflation and water exchange on postcolonoscopy outcomes in patients receiving on-demand sedation: a randomized controlled trial. Gastrointest Endosc. 2017 Jan; 85(1):210-218.e1. PMID: 27207825.
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    21. Guo X, Yang Z, Zhao L, Leung F, Luo H, Kang X, Li X, Jia H, Yang S, Tao Q, Pan Y, Guo X. Enhanced instructions improve the quality of bowel preparation for colonoscopy: a meta-analysis of randomized controlled trials. Gastrointest Endosc. 2017 Jan; 85(1):90-97.e6. PMID: 27189659.
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    22. Cadoni S, Falt P, Sanna S, Argiolas M, Fanari V, Gallittu P, Liggi M, Mura D, Porcedda ML, Smajstrla V, Erriu M, Leung FW. Insertion water exchange increases right colon adenoma and hyperplastic polyp detection rates during withdrawal. Dig Liver Dis. 2016 Jun; 48(6):638-43. PMID: 27017108.
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    23. Cadoni S, Leung FW. Response. Gastrointest Endosc. 2016 Mar; 83(3):677-8. PMID: 26897057.
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    24. Cadoni S, Falt P, Sanna S, Argiolas M, Fanari V, Gallittu P, Liggi M, Mura D, Porcedda ML, Smajstrla V, Erriu M, Leung FW. Impact of Colonoscopy Insertion Techniques on Adenoma Detection. Dig Dis Sci. 2016 07; 61(7):2068-75. PMID: 26846118.
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    25. Kang X, Zhao L, Leung F, Luo H, Wang L, Wu J, Guo X, Wang X, Zhang L, Hui N, Tao Q, Jia H, Liu Z, Chen Z, Liu J, Wu K, Fan D, Pan Y, Guo X. Delivery of Instructions via Mobile Social Media App Increases Quality of Bowel Preparation. Clin Gastroenterol Hepatol. 2016 Mar; 14(3):429-435.e3. PMID: 26492848.
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    26. Leung FW. Intraprocedural Cleansing for Screening Colonoscopy: Avoiding Brownouts. Dig Dis Sci. 2015 Aug; 60(8):2213-5. PMID: 26031420.
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    27. Cadoni S, Falt P, Gallittu P, Liggi M, Mura D, Smajstrla V, Erriu M, Leung FW. Water Exchange Is the Least Painful Colonoscope Insertion Technique and Increases Completion of Unsedated Colonoscopy. Clin Gastroenterol Hepatol. 2015 Nov; 13(11):1972-80.e1-3. PMID: 25956838.
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    28. Hsieh YH, Leung FW. Reply: To PMID 24890443. Gastroenterology. 2015 May; 148(5):1071. PMID: 25824347.
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    29. Hsieh YH, Leung FW. Response to Feuerstein. Am J Gastroenterol. 2015 Mar; 110(3):475-6. PMID: 25743719.
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    30. Wang X, Luo H, Xiang Y, Leung FW, Wang L, Zhang L, Liu Z, Wu K, Fan D, Pan Y, Guo X. Left-colon water exchange preserves the benefits of whole colon water exchange at reduced cecal intubation time conferring significant advantage in diagnostic colonoscopy - a prospective, randomized controlled trial. Scand J Gastroenterol. 2015 Jul; 50(7):916-23. PMID: 25639787.
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    31. Cadoni S, Sanna S, Gallittu P, Argiolas M, Fanari V, Porcedda ML, Erriu M, Leung FW. A randomized, controlled trial comparing real-time insertion pain during colonoscopy confirmed water exchange to be superior to water immersion in enhancing patient comfort. Gastrointest Endosc. 2015 Mar; 81(3):557-66. PMID: 25262100.
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    32. Hsieh YH, Koo M, Leung FW. A patient-blinded randomized, controlled trial comparing air insufflation, water immersion, and water exchange during minimally sedated colonoscopy. Am J Gastroenterol. 2014 Sep; 109(9):1390-400. PMID: 24890443.
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    33. Aljebreen AM, Almadi MA, Leung FW. Sedated vs unsedated colonoscopy: a prospective study. World J Gastroenterol. 2014 May 07; 20(17):5113-8. PMID: 24803827; PMCID: PMC4009549.
    34. Leung JW, Siao-Salera R, Abramyan O, Mann SK, Ward G, Yen A, Gutierrez R, Leung FW. Impact of water exchange colonoscopy on serum sodium and potassium levels: an observational study. Dig Dis Sci. 2014 Mar; 59(3):653-7. PMID: 24254340.
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    35. Cadoni S, Gallittu P, Sanna S, Fanari V, Porcedda ML, Erriu M, Leung FW. A two-center randomized controlled trial of water-aided colonoscopy versus air insufflation colonoscopy. Endoscopy. 2014 Mar; 46(3):212-8. PMID: 24218307.
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    36. Leung FW. Water-aided colonoscopy. Gastroenterol Clin North Am. 2013 Sep; 42(3):507-19. PMID: 23931857.
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    37. Hsieh YH, Lin HJ, Hsieh JJ, Tseng KC, Tseng CW, Hung TH, Leung FW. Meperidine as the single sedative agent during esophagogastroduodenoscopy, a double-blind, randomized, controlled study. J Gastroenterol Hepatol. 2013 Jul; 28(7):1167-73. PMID: 23431993.
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    38. Liu X, Luo H, Zhang L, Leung FW, Liu Z, Wang X, Huang R, Hui N, Wu K, Fan D, Pan Y, Guo X. Telephone-based re-education on the day before colonoscopy improves the quality of bowel preparation and the polyp detection rate: a prospective, colonoscopist-blinded, randomised, controlled study. Gut. 2014 Jan; 63(1):125-30. PMID: 23503044.
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    39. Yen AW, Leung JW, Leung FW. A novel method with significant impact on adenoma detection: combined water-exchange and cap-assisted colonoscopy. Gastrointest Endosc. 2013 Jun; 77(6):944-8. PMID: 23473001.
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    40. Luo H, Zhang L, Liu X, Leung FW, Liu Z, Wang X, Xue L, Wu K, Fan D, Pan Y, Guo X. Water exchange enhanced cecal intubation in potentially difficult colonoscopy. Unsedated patients with prior abdominal or pelvic surgery: a prospective, randomized, controlled trial. Gastrointest Endosc. 2013 May; 77(5):767-73. PMID: 23394837.
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    41. Leung FW, Amato A, Ell C, Friedland S, Harker JO, Hsieh YH, Leung JW, Mann SK, Paggi S, Pohl J, Radaelli F, Ramirez FC, Siao-Salera R, Terruzzi V. Water-aided colonoscopy: a systematic review. Gastrointest Endosc. 2012 Sep; 76(3):657-66. PMID: 22898423.
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    42. Yen AW, Leung JW, Leung FW. A new method for screening and surveillance colonoscopy: Combined water-exchange and cap-assisted colonoscopy. J Interv Gastroenterol. 2012 Jul; 2(3):114-119. PMID: 23805389.
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    43. Leung FW. Benchmarking and quality-screening colonoscopy. J Interv Gastroenterol. 2012 Jul; 2(3):100-102. PMID: 23805385.
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    44. Leung FW, Pan Y, Mann SK, Leung JW, Siao-Salera RM, Jackson G. The water exchange method and difficult colonoscopy. J Interv Gastroenterol. 2012 Jul; 2(3):103-105. PMID: 23805386.
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    45. Leung J, Mann S, Siao-Salera R, Ngo C, McCreery R, Canete W, Leung F. Indigocarmine added to the water exchange method enhances adenoma detection - a RCT. J Interv Gastroenterol. 2012 Jul; 2(3):106-111. PMID: 23805387.
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    46. Fischer LS, Lumsden A, Leung FW. Water exchange method for colonoscopy: learning curve of an experienced colonoscopist in a U.S. community practice setting. J Interv Gastroenterol. 2012 Jul; 2(3):128-132. PMID: 23805393.
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    47. Ngo C, Leung JW, Mann SK, Terrado C, Bowlus C, Ingram D, Leung FW. Interim report of a randomized cross-over study comparing clinical performance of novice trainee endoscopists using conventional air insufflation versus warm water infusion colonoscopy. J Interv Gastroenterol. 2012 Jul; 2(3):135-139. PMID: 23805395.
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    48. Leung JW, Thai A, Yen A, Ward G, Abramyan O, Lee J, Smith B, Leung F. Magnetic endoscope imaging (ScopeGuide) elucidates the mechanism of action of the pain-alleviating impact of water exchange colonoscopy - attenuation of loop formation. J Interv Gastroenterol. 2012 Jul; 2(3):142-146. PMID: 23805397.
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    49. Leung FW. Magnetic endoscope imaging colonoscope: a new modality for hypothesis testing in unsedated colonoscopy. Gastrointest Endosc. 2012 May; 75(5):1037-1039.e1. PMID: 22520878.
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    50. Leung FW, Aljebreen A. Health care providers' acceptance of unsedated colonoscopy before and after a state-of-the-art lecture on the feasibility of the option. Saudi J Gastroenterol. 2012 Jan-Feb; 18(1):50-4. PMID: 22249093; PMCID: PMC3271695.
    51. Leung FW. Prevalence and predictors of interval colorectal cancers - what hypotheses should colonoscopists consider in planning studies to modify the undesirable outcome. Ann Gastroenterol. 2012; 25(2):178-180. PMID: 24714121.
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    52. Portocarrero DJ, Che K, Olafsson S, Walter MH, Jackson CS, Leung FW, Malamud A. A pilot study to assess feasibility of the water method to aid colonoscope insertion in community settings in the United States. J Interv Gastroenterol. 2012 Jan; 2(1):20-22. PMID: 22586546.
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    53. Leung J, Lim B, Ngo C, Lao WC, Wing LY, Hung I, Li M, Leung FW. Head-to-head comparison of practice with endoscopic retrograde cholangiopancreatography computer and mechanical simulators by experienced endoscopists and trainees. Dig Endosc. 2012 May; 24(3):175-81. PMID: 22507092.
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    54. Hsieh YH, Tseng KC, Hsieh JJ, Tseng CW, Hung TH, Leung FW. Feasibility of colonoscopy with water infusion in minimally sedated patients in an Asian Community Setting. J Interv Gastroenterol. 2011 Oct; 1(4):185-190. PMID: 22586535.
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    55. Leung FW. Treatment of fecal incontinence - review of observational studies (OS) and randomized controlled trials (RCT) related to injection of bulking agent into peri-anal tissue. J Interv Gastroenterol. 2011 Oct; 1(4):202-206. PMID: 22586538.
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    56. Leung FW, Mann SK, Leung JW, Siao-Salera RM, Guy J. The water method is effective in difficult colonoscopy - it enhances cecal intubation in unsedated patients with a history of abdominal surgery. J Interv Gastroenterol. 2011 Oct; 1(4):172-176. PMID: 22586531.
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    57. Parikh DA, Mittal M, Leung FW, Mann SK. Improved diagnostic yield with severity of bleeding. J Dig Dis. 2011 Oct; 12(5):357-63. PMID: 21955428.
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    58. Leung FW. Water exchange may be superior to water immersion for colonoscopy. Clin Gastroenterol Hepatol. 2011 Dec; 9(12):1012-4. PMID: 21946120.
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    59. Friedland S, Leung FW. Learning and teaching the water method (with videos). J Interv Gastroenterol. 2011 Jul; 1(3):127-129. PMID: 22163083.
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    60. Leung JW, Wang D, Hu B, Lim B, Leung FW. A head-to-head hands-on comparison of ERCP mechanical simulator (EMS) and Ex-vivo Porcine Stomach Model (PSM). J Interv Gastroenterol. 2011 Jul; 1(3):108-113. PMID: 22163080.
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    61. Ramirez FC, Leung FW. A head-to-head comparison of the water vs. air method in patients undergoing screening colonoscopy. J Interv Gastroenterol. 2011 Jul; 1(3):130-135. PMID: 22163084.
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    62. Leung FW, Leung JW. Introduction to the third issue. J Interv Gastroenterol. 2011 Jul; 1(3):96. PMID: 22163077.
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    63. Ramirez FC, Leung FW. The water method for aiding colonoscope insertion: the learning curve of an experienced colonoscopist. J Interv Gastroenterol. 2011 Jul; 1(3):97-101. PMID: 22163078.
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    64. Leung FW, Aljebreen AM. Unsedated colonoscopy: is it feasible? Saudi J Gastroenterol. 2011 Jul-Aug; 17(4):289-92. PMID: 21727740; PMCID: PMC3133991.
    65. Leung FW, Leung JW, Siao-Salera RM, Mann SK, Jackson G. The water method significantly enhances detection of diminutive lesions (adenoma and hyperplastic polyp combined) in the proximal colon in screening colonoscopy - data derived from two RCT in US veterans. J Interv Gastroenterol. 2011 Apr; 1(2):48-52. PMID: 21776425.
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    66. Leung JW, Ransibrahmanakul K, Toomsen L, Mann SK, Siao-Salera R, Leung FW. The water method combined with chromoendoscopy enhances adenoma detection. J Interv Gastroenterol. 2011 Apr; 1(2):53-58. PMID: 21776426.
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    67. Leung FW, Leung JW, Mann SK, Friedland S, Ramirez FC, Olafsson S. DDW 2011 cutting edge colonoscopy techniques - state of the art lecture master class - warm water infusion/CO(2) insufflation for colonoscopy. J Interv Gastroenterol. 2011 Apr; 1(2):78-82. PMID: 21776430.
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    68. Leung FW. A hypothesis-generating review of the water method for difficult colonoscopy. Scand J Gastroenterol. 2011 May; 46(5):517-21. PMID: 21288188.
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    69. Leung FW, Rao SS. Approach to fecal incontinence and constipation in older hospitalized patients. Hosp Pract (1995). 2011 Feb; 39(1):97-104. PMID: 21441765.
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    70. Leung FW, Leung JW, Siao-Salera RM, Mann SK. The water method significantly enhances proximal diminutive adenoma detection rate in unsedated patients. J Interv Gastroenterol. 2011 Jan; 1(1):8-13. PMID: 21686106.
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    71. Leung FW. Is there a place for sedationless colonoscopy? J Interv Gastroenterol. 2011 Jan; 1(1):19-22. PMID: 21686108.
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    72. Leung FW. Patients' perspective - written testimonials from physician-patients and oral accounts presented by patients in person. J Interv Gastroenterol. 2011 Jan; 1(1):45-46. PMID: 21686115.
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    73. Leung JW, Do LD, Siao-Salera RM, Ngo C, Parikh DA, Mann SK, Leung FW. Retrospective analysis showing the water method increased adenoma detection rate - a hypothesis generating observation. J Interv Gastroenterol. 2011 Jan; 1(1):3-7. PMID: 21686105.
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    74. Siao-Salera R, Leung JW, Mann SK, Canete W, Gutierrez R, Galzote CR, Leung FW. Options of sedation or no sedation for colonoscopy - the perspective of the GI nurses and technicians. J Interv Gastroenterol. 2011 Jan; 1(1):37-41. PMID: 21686113.
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    75. Leung J, Mann S, Siao-Salera R, Ransibrahmanakul K, Lim B, Canete W, Samson L, Gutierrez R, Leung FW. A randomized, controlled trial to confirm the beneficial effects of the water method on U.S. veterans undergoing colonoscopy with the option of on-demand sedation. Gastrointest Endosc. 2011 Jan; 73(1):103-10. PMID: 21184876.
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    76. Lim BS, Leung JW, Lee J, Yen D, Beckett L, Tancredi D, Leung FW. Effect of ERCP mechanical simulator (EMS) practice on trainees' ERCP performance in the early learning period: US multicenter randomized controlled trial. Am J Gastroenterol. 2011 Feb; 106(2):300-6. PMID: 20978485.
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    77. Schnelle JF, Leung FW, Rao SS, Beuscher L, Keeler E, Clift JW, Simmons S. A controlled trial of an intervention to improve urinary and fecal incontinence and constipation. J Am Geriatr Soc. 2010 Aug; 58(8):1504-11. PMID: 20653804; PMCID: PMC2955182.
    78. Leung FW, Harker JO, Jackson G, Okamoto KE, Behbahani OM, Jamgotchian NJ, Aharonian HS, Guth PH, Mann SK, Leung JW. A proof-of-principle, prospective, randomized, controlled trial demonstrating improved outcomes in scheduled unsedated colonoscopy by the water method. Gastrointest Endosc. 2010 Oct; 72(4):693-700. PMID: 20619405.
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    79. Leung FW, Aljebreen AM, Brocchi E, Chang EB, Liao WC, Mizukami T, Schapiro M, Triantafyllou K. Sedation-risk-free colonoscopy for minimizing the burden of colorectal cancer screening. World J Gastrointest Endosc. 2010 Mar 16; 2(3):81-9. PMID: 21160707; PMCID: PMC2998881.
    80. Leung FW, Rao SS. Fecal incontinence in the elderly. Gastroenterol Clin North Am. 2009 Sep; 38(3):503-11. PMID: 19699410.
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    81. Leung FW. Search for premalignant mucosal lesions: does endoscopic measurement of oxygen saturation by differential path-length spectroscopy help? Gastrointest Endosc. 2009 Jul; 70(1):7-8. PMID: 19559830.
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    82. Leung JW, Mann SK, Siao-Salera R, Ransibrahmanakul K, Lim B, Cabrera H, Canete W, Barredo P, Gutierrez R, Leung FW. A randomized, controlled comparison of warm water infusion in lieu of air insufflation versus air insufflation for aiding colonoscopy insertion in sedated patients undergoing colorectal cancer screening and surveillance. Gastrointest Endosc. 2009 Sep; 70(3):505-10. PMID: 19555938.
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    83. Schnelle JF, Simmons SF, Beuscher L, Peterson EN, Habermann R, Leung F. Prevalence of constipation symptoms in fecally incontinent nursing home residents. J Am Geriatr Soc. 2009 Apr; 57(4):647-52. PMID: 19392956; PMCID: PMC2925174.
    84. Leung FW, Aharonian HS, Leung JW, Guth PH, Jackson G. Impact of a novel water method on scheduled unsedated colonoscopy in U.S. veterans. Gastrointest Endosc. 2009 Mar; 69(3 Pt 1):546-50. PMID: 19231497.
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    85. Leung FW. The case of unsedated screening colonoscopy in the United States. Gastrointest Endosc. 2009 Jun; 69(7):1354-6. PMID: 19249764.
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    86. Leung JW, Salera R, Toomsen L, Mann S, Leung FW. Pilot feasibility study of the method of water infusion without air insufflation in sedated colonoscopy. Dig Dis Sci. 2009 Sep; 54(9):1997-2001. PMID: 19058003.
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    87. Leung FW, Aharonian S, Guth PH, Jackson G, Chu SK, Nguyen BD, Simpson P. Unsedated colonoscopy: time to revisit this option? J Fam Pract. 2008 Dec; 57(12):E1-4. PMID: 19080759.
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    88. Leung FW, Schnelle JF. Urinary and fecal incontinence in nursing home residents. Gastroenterol Clin North Am. 2008 Sep; 37(3):697-707, x. PMID: 18794004; PMCID: PMC2614622.
    89. Leung FW. Endoscopic reflectance spectrophotometry and visible light spectroscopy in clinical gastrointestinal studies. Dig Dis Sci. 2008 Jun; 53(6):1669-77. PMID: 17932761.
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    90. Leung FW. Methods of reducing discomfort during colonoscopy. Dig Dis Sci. 2008 Jun; 53(6):1462-7. PMID: 17999189.
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    91. Leung FW. Unsedated colonoscopy for paradoxical agitation: an unusual practice for an uncommon complication in U.S. veterans. Am J Gastroenterol. 2008 Jun; 103(6):1578-9. PMID: 18494833.
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    92. Leung FW. Capsaicin-sensitive intestinal mucosal afferent mechanism and body fat distribution. Life Sci. 2008 Jul 04; 83(1-2):1-5. PMID: 18541272.
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    93. Leung FW. Water-related techniques for performance of colonoscopy. Dig Dis Sci. 2008 Nov; 53(11):2847-50. PMID: 18461455.
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    94. Leung FW. Promoting informed choice of unsedated colonoscopy: patient-centered care for a subgroup of US Veterans. Dig Dis Sci. 2008 Nov; 53(11):2955-9. PMID: 18461456.
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    95. Leung FW, Aharonian HS, Guth PH, Chu SK, Nguyen BD, Simpson P. Involvement of trainees in routine unsedated colonoscopy: review of a pilot experience. Gastrointest Endosc. 2008 Apr; 67(4):718-22. PMID: 18374030.
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    96. Leung FW. Should minimization of cardiopulmonary unplanned events be an option as a quality indicator in colonoscopy performed for colorectal cancer screening? Gastrointest Endosc. 2008 Mar; 67(3):579-80. PMID: 18294530.
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    97. Leung FW. Risk factors for gastrointestinal complications in aspirin users: review of clinical and experimental data. Dig Dis Sci. 2008 Oct; 53(10):2604-15. PMID: 18306040.
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    98. Leung FW. Unsedated colonoscopy introduced to ensure access is acceptable to a subgroup of veterans. Dig Dis Sci. 2008 Oct; 53(10):2719-22. PMID: 18274901.
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    99. Leung FW, Mann SK, Salera R, Toomsen L, Cabrera H, Prather D, Gutierrez R, Leung JW. Options for screening colonoscopy without sedation: sequel to a pilot study in U.S. veterans. Gastrointest Endosc. 2008 Apr; 67(4):712-7. PMID: 18279868.
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    100. Leung FW. Double-EMR-derived full-thickness biopsy and functional GI disorders. Gastrointest Endosc. 2008 Feb; 67(2):304-6. PMID: 18226693.
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    101. Leung FW, Murray S, Murray E, Go VL. Determination of body fat distribution by dual-energy X-ray absorptiometry and attenuation of visceral fat vasoconstriction by enalapril. Dig Dis Sci. 2008 Apr; 53(4):1084-7. PMID: 17939045.
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    102. Leung JW, Lee JG, Rojany M, Wilson R, Leung FW. Development of a novel ERCP mechanical simulator. Gastrointest Endosc. 2007 Jun; 65(7):1056-62. PMID: 17531642.
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    103. Leung FW, Chan CC. Intragastric nitroglycerin at a vasodilatory dose attenuates acidified aspirin-induced gastric mucosal injury. Dig Dis Sci. 2007 Sep; 52(9):2229-35. PMID: 17420937.
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    104. Leung FW, Chan CC. Involvement of alpha(2)-adrenoceptors in the gastric protective effect of nitroglycerin against acidified ethanol-induced mucosal injury. Dig Dis Sci. 2007 Nov; 52(11):3070-4. PMID: 17394070.
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    105. Leung FW, Go VL, Scremin OU, Obenaus A, Tuck ML, Golub MS, Eggena P, Leung JW. Pilot studies to demonstrate that intestinal mucosal afferent nerves are functionally linked to visceral adipose tissue. Dig Dis Sci. 2007 Oct; 52(10):2695-702. PMID: 17393331.
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    106. Leung FW. Etiologic factors of chronic constipation: review of the scientific evidence. Dig Dis Sci. 2007 Feb; 52(2):313-6. PMID: 17219073.
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    107. Littner MR, Leung FW, Ballard ED, Huang B, Samra NK. Effects of 24 weeks of lansoprazole therapy on asthma symptoms, exacerbations, quality of life, and pulmonary function in adult asthmatic patients with acid reflux symptoms. Chest. 2005 Sep; 128(3):1128-35. PMID: 16162697.
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    108. Leung FW, Lieberman J, Fagen N, Kasimian D, Wick R. Colonoscopic features of simvastatin-induced colitis suggest ischemia as an etiologic mechanism. Gastrointest Endosc. 2005 Jul; 62(1):175-8. PMID: 15990847.
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    109. Spirt MJ, Guth PH, Randall G, Leung FW. Gastroduodenal perfusion and mortality in mechanical ventilation-dependent patients with systemic inflammatory response syndrome. Dig Dis Sci. 2004 Jun; 49(6):906-13. PMID: 15309876.
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    110. Leung FW. The venerable nasogastric tube. Gastrointest Endosc. 2004 Feb; 59(2):255-60. PMID: 14745400.
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    111. Schnelle JF, Leung FW. Urinary and fecal incontinence in nursing homes. Gastroenterology. 2004 Jan; 126(1 Suppl 1):S41-7. PMID: 14978637.
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    112. Tsui CP, Sung JJ, Leung FW. Role of acute elevation of portal venous pressure by exogenous glucagon on gastric mucosal injury in rats with portal hypertension. Life Sci. 2003 Jul 18; 73(9):1115-29. PMID: 12818720.
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    113. Leung FW, Iwata F, Seno K, Leung JW. Acid-induced mesenteric hyperemia in rats: role of CGRP, substance P, prostaglandin, adenosine, and histamine. Dig Dis Sci. 2003 Mar; 48(3):523-32. PMID: 12757165.
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    114. Ramirez FC, Padda S, Medlin S, Tarbell H, Leung FW. Reflectance spectrophotometry in the gastrointestinal tract: limitations and new applications. Am J Gastroenterol. 2002 Nov; 97(11):2780-4. PMID: 12425548.
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    115. Leung FW, Iwata F, Kao J, Seno K, Itoh M, Leung JW. Role of bradykinin in acid-induced mesenteric hyperemia and duodenal villous damage. Life Sci. 2002 Jan 04; 70(7):779-90. PMID: 11837250.
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