[1] Mackay Mem Hosp, Div Gastroenterol & Hepatol, Dept Internal Med, Taipei, Taiwan
[2] Mackay Jr Coll Med Nursing & Management, Taipei, Taiwan
[3] Mackay Med Coll, New Taipei, Taiwan
[4] Natl Taiwan Univ Hosp, Dept Internal Med, Taipei, Taiwan
[5] Coll Med, Taipei, Taiwan
[6] China Med Univ Hosp, Div Gastroenterol & Hepatol, Dept Internal Med, Taichung, Taiwan
[7] Mackay Mem Hosp, Div Colon & Rectal Surg, Dept Surg, Taipei, Taiwan
[8] Natl Cheng Kung Univ, Dept Internal Med, Med Coll & Hosp, Tainan, Taiwan
[9] Chung Shan Med Univ, Div Gastroenterol, Taichung, Taiwan
[10] Kaohsiung Med Univ, Dept Gastroenterol, Kaohsiung, Taiwan
[11] Changhua Christian Hosp, Dept Gastroenterol, Changhua, Taiwan
[12] Taipei Vet Gen Hosp, Div Colon & Rectal Surg, Dept Surg, Taipei, Taiwan
[13] Natl Yang Ming Univ, Dept Surg, Sch Med, Taipei, Taiwan
[14] Show Chwan Mem Hosp, Div Gastroenterol, Dept Med, Changhuan, Taiwan
[15] Natl Taiwan Univ, Dept Pediat, Taipei, Taiwan