[1] Univ Indonesia, Div Gastroenterol, Dept Internal Med, Fac Med, Jakarta, Indonesia
[2] Oita Univ, Fac Med, Dept Environm & Prevent Med, Yufu, Japan
[3] Airlangga Univ, Fac Med, Dept Internal Med, Gastroenterohepatol Div, Surabaya, Indonesia
[4] Santo Antonius Hosp, Dept Internal Med, Pontianak, Indonesia
[5] Yowari Hosp, Dept Internal Med, Jayapura, Indonesia
[6] Baylor Coll Med, Dept Gastroenterol & Hepatol, Houston, TX 77030 USA
[7] Michael E DeBakey VA Med Ctr, Houston, TX USA