[1] Natl Univ Singapore Hosp, Univ Med Cluster, Div Gastroenterol & Hepatol, Singapore, Singapore
[2] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Internal Med, Singapore, Singapore
[3] Taiwan Natl Yang Ming Univ Taipei, Natl Yang Ming Univ Taipei, Taipei Vet Gen Hosp, Div Gastroenterol, Taipei, Taiwan
[4] Chinese Univ Hong Kong, Inst Digest Dis, Dept Med & Therapeut, Hong Kong, Hong Kong, Peoples R China
[5] Guangzhou Med Univ, Affiliated Hosp 1, Dept Gastroenterol & Hepatol, Guangzhou, Guangdong, Peoples R China
[6] Sun Yet Sen Univ, Dept Gastroenterol & Hepatol, Affiliated Hosp 1, Guangzhou, Guangdong, Peoples R China
[7] Huazhong Univ Sci & Technol, Union Hosp, Tongji Med Coll, Dept Gastroenterol & Hepatol, Wuhan, Hubei, Peoples R China
[8] Univ Michigan, Dept Ind & Operat Engn, Ann Arbor, MI 48109 USA
[9] Univ N Carolina, Ctr Funct GI & Motil Disorders, Chapel Hill, NC USA
[10] Asian Inst Gastroenterol, Hyderabad, Andhra Prades, India
[11] Sanjay Gandhi Postgrad Inst Med Sci, Dept Gastroenterol, Lucknow, Uttar Pradesh, India
[12] Univ Indonesia, Dr Cipto Mangunkusumo Hosp, Fac Med, Div Gastroenterol,Dept Internal Med, Jakarta, Indonesia
[13] Catholic Univ Korea, Dept Internal Med, Seoul, South Korea
[14] Korea Univ, Guro Hosp, Dept Gastroenterol, Seoul, South Korea
[15] Chulalongkorn Univ, Dept Med, Bangkok, Thailand
[16] King Chulalongkorn Mem Hosp, Bangkok, Thailand
[17] Ipoh Gastro Ctr, Perak, Malaysia