[1] Chang Gung Univ, Coll Med, Chang Gung Mem Hosp, Guishan, Taiwan
[2] Aristotle Univ Thessaloniki, Dept Internal Med, Thessaloniki, Greece
[3] Univ Fed Rio Grande do Sul, BR-90046900 Porto Alegre, RS, Brazil
[4] GB Pant Hosp, Dept Gastroenterol, Delhi, India
[5] Mahidol Univ, Siriraj Hosp, Dept Med, Bangkok 10700, Thailand
[6] Alice Ho Miu Ling Nethersole Hosp, Tai Po, Hong Kong, Peoples R China
[7] Univ Calgary, Liver Unit, Calgary, AB T2N 1N4, Canada
[8] Columbia Univ, Med Ctr, Ctr Liver Dis & Transp, New York, NY 10027 USA