[1] Singapore Gen Hosp, Dept Gastroenterol & Hepatol, Singapore, Singapore
[2] Singapore Gen Hosp, Dept Colorectal Surg, Singapore, Singapore
[3] Changi Gen Hosp, Dept Gastroenterol, Singapore, Singapore
[4] Tan Tock Seng Hosp, Dept Gastroenterol, Singapore, Singapore
[5] Univ Malaya, Div Gastroenterol & Hepatol, Fac Med, Kuala Lumpur, Malaysia
[6] Univ Malaya, Dept Paediat, Kuala Lumpur, Malaysia
[7] Hosp Sultanah Bahiyah, Alor Setar, Malaysia
[8] All India Inst Med Sci, Dept Gastroenterol & Human Nutr, New Delhi, India
[9] Monash Univ, Box Hill Hosp, Dept Med, Box Hill, Vic, Australia
[10] Concord Hosp, Gastroenterol & Liver Serv, Sydney, NSW, Australia
[11] Natl Taiwan Univ, Dept Internal Med, Taipei, Taiwan
[12] Univ Hong Kong, Dept Med, Hong Kong, Hong Kong, Peoples R China
[13] Chinese Univ Hong Kong, Dept Med & Therapeut, Hong Kong, Hong Kong, Peoples R China
[14] Univ Otago, Dept Med, Christchurch, New Zealand
[15] Sichuan Univ, West China Hosp, Dept Internal Med, Div Gastroenterol, Chengdu 610064, Peoples R China
[16] Univ Santo Tomas, Dept Med, Manila, Philippines
[17] Mahidol Univ, Siriraj Hosp, Div Gastroenterol, Dept Med, Bangkok 10700, Thailand
[18] Chulalongkorn Univ, King Chulalongkorn Mem Hosp, Dept Med, Div Gastroenterol, Bangkok, Thailand
[19] Chiang Mai Univ, Fac Med, Dept Internal Med, Div Gastroenterol, Chiang Mai 50000, Thailand
[20] Univ Kelaniya, Fac Med, Dept Med, Ragama, Sri Lanka
[21] Kitasato Univ, Tokyo, Japan