• 7444 Citations
  • 50 h-Index
1982 …2020

Research output per year

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Research Output

2020

Underwater versus conventional endoscopic resection of nondiminutive nonpedunculated colorectal lesions: a prospective randomized controlled trial (with video)

Yen, A. W., Leung, J. W., Wilson, M. D. & Leung, F. W., Mar 2020, In : Gastrointestinal Endoscopy. 91, 3, p. 643-654.e2

Research output: Contribution to journalArticle

2019

A prospective RCT comparing combined chromoendoscopy with water exchange (CWE) vs water exchange (WE) vs air insufflation (AI) in adenoma detection in screening colonoscopy

Leung, J., Yen, A. W., Jia, H., Opada, C., Melnik, A., Atkins, J., Feller, C., Wilson, M. D. & Leung, F. W., Jan 1 2019, In : United European Gastroenterology Journal.

Research output: Contribution to journalArticle

Open Access
3 Scopus citations

Optimal dilation time for combined small endoscopic sphincterotomy and balloon dilation for common bile duct stones: a multicentre, single-blinded, randomised controlled trial

Meng, W., Leung, J., Zhang, K., Zhou, W., Wang, Z., Zhang, L., Sun, H., Xue, P., Liu, W., Wang, Q., Zhang, J., Wang, X., Wang, M., Shao, Y., Cai, K., Hou, S., Li, Q., Zhang, L., Zhu, K., Yue, P. & 28 others, Wang, H., Zhang, M., Sun, X., Yang, Z., Tao, J., Wen, Z., Wang, Q., Chen, B., Shao, Q., Zhao, M., Zhang, R., Jiang, T., Liu, K., Zhang, L., Chen, K., Zhu, X., Zhang, H., Miao, L., Wang, Z., Li, J., Yan, X., Wang, F., Zhang, L., Suzuki, A., Tanaka, K., Nur, U., Weiderpass, E. & Li, X., Jun 1 2019, In : The Lancet Gastroenterology and Hepatology. 4, 6, p. 425-434 10 p.

Research output: Contribution to journalArticle

3 Scopus citations

Total underwater colonoscopy: still murky

Hsieh, Y. H., Cadoni, S., Ishaq, S. & Leung, J., May 1 2019, In : Gastrointestinal Endoscopy. 89, 5, 1 p.

Research output: Contribution to journalLetter

1 Scopus citations

Water Exchange (WE) and Quality Improvement - Enhanced Advanced Adenoma Detection: A Pooled Data Analysis of 6 Randomized Controlled Trials

Leung, F. W., Koo, M., Jia, H., Leung, J. W., Cadoni, S., Falt, P., Hsieh, Y. H., Hu, C. T., Pan, Y. & Radaelli, F., Jan 1 2019, (Accepted/In press) In : Journal of Clinical Gastroenterology. 0000131.

Research output: Contribution to journalReview article

Water Exchange Produces Significantly Higher Adenoma Detection Rate Than Water Immersion: Pooled Data from 2 Multisite Randomized Controlled Trials

Leung, F. W., Koo, M., Cadoni, S., Falt, P., Hsieh, Y. H., Amato, A., Erriu, M., Fojtik, P., Gallittu, P., Hu, C. T., Leung, J., Liggi, M., Paggi, S., Radaelli, F., Rondonotti, E., Smajstrla, V., Tseng, C. W. & Urban, O., Mar 1 2019, In : Journal of Clinical Gastroenterology. 53, 3, p. 204-209 6 p.

Research output: Contribution to journalArticle

3 Scopus citations
2018

Emergent Endoscopic Retrograde Cholangiopancreatography with Placement of Biliary Double Stents to Salvage Endoscopic Retrograde Cholangiopancreatography-Induced Stapfer's Type II Perforation

Yue, P., Meng, W. B., Leung, J., Zhang, L., Zhu, X. L., Zhang, H., Wang, H. P., Wang, Z. F., Zhu, K. X., Miao, L., Zhou, W. C. & Li, X., Oct 5 2018, In : Chinese Medical Journal. 131, 19, p. 2346-2348 3 p.

Research output: Contribution to journalLetter

Underwater polypectomy without submucosal injection for colorectal lesions ≤ 20 mm in size—a multicenter retrospective observational study

Yen, A. W., Amato, A., Cadoni, S., Friedland, S., Hsieh, Y. H., Leung, J., Liggi, M., Sul, J. & Leung, F. W., Jan 1 2018, (Accepted/In press) In : Surgical Endoscopy.

Research output: Contribution to journalArticle

1 Scopus citations
2017

Comparable Long-Term Outcomes of 1-Minute vs 5-Minute Endoscopic Papillary Balloon Dilation for Bile Duct Stones

Kuo, Y. T., Wang, H. P., Chang, C. Y., Leung, J., Chen, J. H., Tsai, M. C. & Liao, W. C., 2017, (Accepted/In press) In : Clinical Gastroenterology and Hepatology.

Research output: Contribution to journalArticle

5 Scopus citations
2016

Flexible transgastric endoscopic liver cyst fenestration A feasibility study in humans (with video)

Wang, D., Liu, Y., Chen, D., Li, X., Wu, R., Liu, W., Leung, J., Zhang, C. & Li, Z., 2016, In : Medicine (United States). 95, 51, p. e5420

Research output: Contribution to journalArticle

2 Scopus citations

Routine pre-procedural rectal indometacin versus selective post-procedural rectal indometacin to prevent pancreatitis in patients undergoing endoscopic retrograde cholangiopancreatography: a multicentre, single-blinded, randomised controlled trial

Luo, H., Zhao, L., Leung, J., Zhang, R., Liu, Z., Wang, X., Wang, B., Nie, Z., Lei, T., Li, X., Zhou, W., Zhang, L., Wang, Q., Li, M., Zhou, Y., Liu, Q., Sun, H., Wang, Z., Liang, S., Guo, X. & 5 others, Tao, Q., Wu, K., Pan, Y., Guo, X. & Fan, D., Jun 4 2016, In : The Lancet. 387, 10035, p. 2293-2301 9 p.

Research output: Contribution to journalArticle

78 Scopus citations

Traction with dental floss and endoscopic clip improves trainee success in performing gastric endoscopic submucosal dissection (ESD): a live porcine study (with video)

He, Y., Fu, K., Leung, J., Du, Y., Wang, J., Jin, P., Yu, Y., Yu, D., Wang, X. & Sheng, J., Jul 1 2016, In : Surgical Endoscopy and Other Interventional Techniques. 30, 7, p. 3138-3144 7 p.

Research output: Contribution to journalArticle

7 Scopus citations
2015

Appropriate time for selective biliary cannulation by trainees during ERCP - A randomized trial

Pan, Y., Zhao, L., Leung, J., Zhang, R., Luo, H., Wang, X., Liu, Z., Wan, B., Tao, Q., Yao, S., Hui, N., Fan, D., Wu, K. & Guo, X., Aug 1 2015, In : Endoscopy. 47, 8, p. 688-695 8 p.

Research output: Contribution to journalArticle

13 Scopus citations

Comparison of sequential pancreatic duct guidewire placement technique and needle knife precut sphincterotomy for difficult biliary cannulation

Zou, X. P., Leung, J., Li, Y. H., Yao, Y. L., Pei, Q. S., Wu, Y. L., He, Q. B., Cao, J. & Ding, X. W., Dec 1 2015, In : Journal of Digestive Diseases. 16, 12, p. 741-746 6 p.

Research output: Contribution to journalArticle

4 Scopus citations

Diversion colitis: Systematic evaluation of 636 cases with meta-Analysis

Mann, N. S., Leung, J., Nagra, S. S. & Shahedi, K., Jan 1 2015, In : International Medical Journal. 22, 6, p. 500-503 4 p.

Research output: Contribution to journalArticle

1 Scopus citations
2014

ERCP: The Fundamentals: Second Edition

Cotton, P. B. & Leung, J., Dec 19 2014, Wiley Blackwell. 415 p.

Research output: Book/ReportBook

Impact of water exchange colonoscopy on serum sodium and potassium levels: An observational study

Leung, J., Siao-Salera, R., Abramyan, O., Mann, S. K., Ward, G., Yen, A., Gutierrez, R. & Leung, F. W., Mar 2014, In : Digestive Diseases and Sciences. 59, 3, p. 653-657 5 p.

Research output: Contribution to journalArticle

6 Scopus citations

Introduction: Developments in ERCP over 40 years

Cotton, P. B. & Leung, J., Dec 19 2014, ERCP: The Fundamentals: Second Edition. Wiley Blackwell, p. xii-xiv

Research output: Chapter in Book/Report/Conference proceedingForeword/postscript

Introduction to the volume 4, third issue

Leung, J. W. & Leung, F. W., 2014, In : Asia Pacific Family Medicine. 8, 1, p. 55 1 p.

Research output: Contribution to journalArticle

Management of benign biliary strictures with a novel retrievable self-expandable metal stent

Hu, B., Leung, J., Gao, D. J., Wang, T. T. & Wu, J., 2014, In : Journal of Digestive Diseases. 15, 3, p. 146-153 8 p.

Research output: Contribution to journalArticle

12 Scopus citations

Preparing the facilities and equipment

Leung, J., Dec 19 2014, ERCP: The Fundamentals: Second Edition. Wiley Blackwell, p. 17-27 11 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Standard devices and techniques

Leung, J., Dec 19 2014, ERCP: The Fundamentals: Second Edition. Wiley Blackwell, p. 67-120 54 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Training and assessment of competence (Preparing the endoscopist)

Leung, J. & Cotton, P. B., Dec 19 2014, ERCP: The Fundamentals: Second Edition. Wiley Blackwell, p. 1-16 16 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

2013

A novel method with significant impact on adenoma detection: Combined water-exchange and cap-assisted colonoscopy

Yen, A. W., Leung, J. & Leung, F. W., Jun 2013, In : Gastrointestinal Endoscopy. 77, 6, p. 944-948 5 p.

Research output: Contribution to journalArticle

15 Scopus citations

Coached practice using ERCP mechanical simulator improves trainees' ERCP performance: A randomized controlled trial

Liao, W. C., Leung, J., Wang, H. P., Chang, W. H., Chu, C. H., Lin, J. T., Wilson, R., Lim, B. & Leung, F., 2013, In : Endoscopy. 45, 10, p. 799-805 7 p.

Research output: Contribution to journalArticle

13 Scopus citations

History of bile duct stenting: Rigid prostheses

Leung, J., Oct 1 2013, Self-Expandable Stents in the Gastrointestinal Tract. Springer New York, p. 15-31 17 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations
2012

Balloon Dilation With Adequate Duration Is Safer Than Sphincterotomy for Extracting Bile Duct Stones: A Systematic Review and Meta-analyses

Liao, W. C., Tu, Y. K., Wu, M. S., Wang, H. P., Lin, J. T., Leung, J. & Chien, K. L., Oct 2012, In : Clinical Gastroenterology and Hepatology. 10, 10, p. 1101-1109 9 p.

Research output: Contribution to journalArticle

49 Scopus citations

Head-to-head comparison of practice with endoscopic retrograde cholangiopancreatography computer and mechanical simulators by experienced endoscopists and trainees

Leung, J., Lim, B., Ngo, C., Lao, W. C., Wing, L. Y., Hung, I., Li, M. & Leung, F. W., May 2012, In : Digestive Endoscopy. 24, 3, p. 175-181 7 p.

Research output: Contribution to journalArticle

9 Scopus citations

Transgastric endoscopic gastroenterostomy using a partially covered occluder: A canine feasibility study 1

Luo, H., Pan, Y., Min, L., Zhao, L., Li, J., Leung, J., Xue, L., Yin, Z., Liu, X., Liu, Z., Sun, A., Li, C., Wu, K., Guo, X. & Fan, D., 2012, In : Endoscopy. 44, 5, p. 493-498 6 p.

Research output: Contribution to journalArticle

7 Scopus citations

Water-aided colonoscopy: A systematic review

Leung, F. W., Amato, A., Ell, C., Friedland, S., Harker, J. O., Hsieh, Y. H., Leung, J., Mann, S. K., Paggi, S., Pohl, J., Radaelli, F., Ramirez, F. C., Siao-Salera, R. & Terruzzi, V., Sep 2012, In : Gastrointestinal Endoscopy. 76, 3, p. 657-666 10 p.

Research output: Contribution to journalArticle

85 Scopus citations
2011

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

Leung, J., Mann, S. K., Siao-Salera, R., Ransibrahmanakul, K., Lim, B., Canete, W., Samson, L., Gutierrez, R. & Leung, F. W., Jan 2011, In : Gastrointestinal Endoscopy. 73, 1, p. 103-110 8 p.

Research output: Contribution to journalArticle

64 Scopus citations
29 Scopus citations

ERCP

Leung, J. & Lim, B. S., Apr 26 2011, Successful Training in Gastrointestinal Endoscopy. Wiley-Blackwell, p. 85-96 12 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

The water method significantly enhances patient-centered outcomes in sedated and unsedated colonoscopy

Leung, F. W., Leung, J., Mann, S. K., Friedland, S. & Ramirez, F. C., 2011, In : Endoscopy. 43, 9, p. 816-821 6 p.

Research output: Contribution to journalArticle

27 Scopus citations

Training methods for endoscopic retrograde cholangiopancreatography

Lim, B. S. & Leung, J., Apr 2011, In : Techniques in Gastrointestinal Endoscopy. 13, 2, p. 132-139 8 p.

Research output: Contribution to journalArticle

1 Scopus citations
2010

A proof-of-principle, prospective, randomized, controlled trial demonstrating improved outcomes in scheduled unsedated colonoscopy by the water method

Leung, F. W., Harker, J. O., Jackson, G., Okamoto, K. E., Behbahani, O. M., Jamgotchian, N. J., Aharonian, H. S., Guth, P. H., Mann, S. K. & Leung, J., Oct 2010, In : Gastrointestinal Endoscopy. 72, 4, p. 693-700 8 p.

Research output: Contribution to journalArticle

85 Scopus citations

Randomized trial of 1-minute versus 5-minute endoscopic balloon dilation for extraction of bile duct stones

Liao, W. C., Lee, C. T., Chang, C. Y., Leung, J., Chen, J. H., Tsai, M. C., Lin, J. T., Wu, M. S. & Wang, H. P., Dec 2010, In : Gastrointestinal Endoscopy. 72, 6, p. 1154-1162 9 p.

Research output: Contribution to journalArticle

61 Scopus citations
2009

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

Leung, J., Mann, S. K., Siao-Salera, R., Ransibrahmanakul, K., Lim, B., Cabrera, H., Canete, W., Barredo, P., Gutierrez, R. & Leung, F. W., Sep 2009, In : Gastrointestinal Endoscopy. 70, 3, p. 505-510 6 p.

Research output: Contribution to journalArticle

62 Scopus citations

How safe and successful are live demonstrations of therapeutic ERCP a large multicenter study

Liao, Z., Li, Z. S., Leung, J., Zhang, X., Zhang, S. T., Ji, M., Fan, Z. N., Zhi, F. C., Li, Y. M., Chen, X. X., Lu, L., Ren, X., Jia, G. F., Huang, L. Y., Lv, N. H., Xie, W. F., Ge, Z. Z. & Chao, W. S. C., Jan 2009, In : American Journal of Gastroenterology. 104, 1, p. 47-52 6 p.

Research output: Contribution to journalArticle

26 Scopus citations

Impact of a novel water method on scheduled unsedated colonoscopy in U.S. veterans

Leung, F. W., Aharonian, H. S., Leung, J., Guth, P. H. & Jackson, G., Mar 2009, In : Gastrointestinal Endoscopy. 69, 3, p. 546-550 5 p.

Research output: Contribution to journalArticle

54 Scopus citations

Pilot feasibility study of the method of water infusion without air insufflation in sedated colonoscopy

Leung, J., Salera, R., Toomsen, L., Mann, S. K. & Leung, F. W., Sep 2009, In : Digestive Diseases and Sciences. 54, 9, p. 1997-2001 5 p.

Research output: Contribution to journalArticle

14 Scopus citations

Response

Leung, F. W., Aharonian, H. S., Leung, J., Guth, P. H. & Jackson, G., Dec 2009, In : Gastrointestinal Endoscopy. 70, 6, p. 1289 1 p.

Research output: Contribution to journalArticle

Response

Leung, F. W., Guth, P. H., Aharonian, H. S., Mann, S. K. & Leung, J., Jan 2009, In : Gastrointestinal Endoscopy. 69, 1, p. 192-193 2 p.

Research output: Contribution to journalArticle

Success rate and complications of ERCP performed during hands-on training courses: a multicenter study in China

Liao, Z., Li, Z. S., Leung, J., Zou, X. P., He, L. P., Jia, G. F., Huang, Q., Ji, M., Huang, L. Y. & Chao, W. S. C., Feb 2009, In : Gastrointestinal Endoscopy. 69, 2, p. 230-237 8 p.

Research output: Contribution to journalArticle

4 Scopus citations

Wire for hire? The impact of wire-guided cannulation in ERCP

Lim, B. S. & Leung, J., Mar 2009, In : Gastrointestinal Endoscopy. 69, 3, p. 450-452 3 p.

Research output: Contribution to journalArticle

3 Scopus citations
2008

Comparison of accessory performance using a novel ERCP mechanical simulator

Leung, J., Lee, W., Wilson, R., Lim, B. S. & Leung, F. W., Dec 2008, In : Endoscopy. 40, 12, p. 983-988 6 p.

Research output: Contribution to journalArticle

10 Scopus citations
2 Scopus citations

Options for screening colonoscopy without sedation: sequel to a pilot study in U.S. veterans

Leung, F. W., Mann, S. K., Salera, R., Toomsen, L., Cabrera, H., Prather, D., Gutierrez, R. & Leung, J., Apr 2008, In : Gastrointestinal Endoscopy. 67, 4, p. 712-717 6 p.

Research output: Contribution to journalArticle

18 Scopus citations

Response

Leung, F. W., Mann, S. K. & Leung, J., Nov 2008, In : Gastrointestinal Endoscopy. 68, 5, p. 1029 1 p.

Research output: Contribution to journalArticle

Sedation during colonoscopy and the benefits of lubrication: Authors' reply [2]

Leung, J., Mann, S. K. & Leung, F. W., Jan 2008, In : Alimentary Pharmacology and Therapeutics. 27, 2, p. 208-209 2 p.

Research output: Contribution to journalArticle