[1] Chinese Univ Hong Kong, Inst Digest Dis, Shatin, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Dept Med & Therapeut, Hong Kong, Hong Kong, Peoples R China
[3] Natl Taiwan Univ, Coll Med, Dept Internal Med, Taipei, Taiwan
[4] Yonsei Univ, Wonju Coll Med, Dept Internal Med, Wonju, South Korea
[5] Natl Canc Ctr, Endoscopy Div, Tokyo, Japan
[6] Chinese Univ Hong Kong, Dept Surg, Hong Kong, Hong Kong, Peoples R China
[7] Zhejiang Univ, Canc Inst, Hanggzhou, Zhejiang, Peoples R China
[8] Bikur Holim Hosp, Div Gastroenterol, Jerusalem, Israel
[9] Asian Healthcare Fdn, Asian Inst Gastroenterol, Hyderabad, Andhra Pradesh, India
[10] Natl Univ Singapore, Asian Healthcare Fdn, Dept Med, Singapore 117548, Singapore
[11] Chinese Univ Hong Kong, Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China
[12] Erasmus Univ, Med Ctr, Dept Med & Therapeut, Rotterdam, Netherlands
[13] Univ Toronto, Inst Clin Evaluat Sci, Toronto, ON M5S 1A1, Canada
[14] Flinders Med Ctr, Dept Gastroenterol, Adelaide, SA, Australia
[15] Univ Dundee, Dept Surg & Mol Oncol, Dundee, Scotland
[16] Portland VA Med Ctr, Portland, OR USA
[17] Univ Malaya, Dept Gastroenterol & Hepatol, Kuala Lumpur, Malaysia