[1] Chulalongkorn Univ, Bangkok, Thailand
[2] Chulalongkorn Univ, Med, Bangkok, Thailand
[3] Univ Malaya, Dept Med, Gastroenterol & Hepatol Unit, Gastrointestinal Endoscopy Unit,Fac Med, Kuala Lumpur, Malaysia
[4] Singapore Gen Hosp, Singapore, Singapore
[5] Shanghai Jiao Tong Univ, Xinhua Hosp, Gastroenterol, Shanghai, Peoples R China
[6] Catholic Univ Korea, Seoul, South Korea
[7] Mahidol Univ, Med, Salaya, Nakhon Pathom, Thailand
[8] Postgrad Inst Med Educ & Res, Dept Hepatol, Chandigarh, India
[9] Natl Univ Singapore, Singapore, Singapore
[10] Yokohama City Univ, Gastroenterol & Hepatol, Grad Sch Med, Yokohama, Kanagawa, Japan
[11] Univ Malaya, Kuala Lumpur, Malaysia
[12] Chinese Univ Hong Kong, Dept Med & Therapeut, Inst Digest Dis, Hong Kong, Hong Kong, Peoples R China
[13] Chinese Univ Hong Kong, State Key Lab Digest Dis, Hong Kong, Hong Kong, Peoples R China