[1] Taipei City Hosp, Ren Ai Branch, Dept Gastroenterol, Ctr Liver, Taipei, Taiwan
[2] Natl Yang Ming Univ, Inst Clin Med, Taipei 112, Taiwan
[3] Kaohsiung Med Univ Hosp, Dept Internal Med, Div Gastroenterol, Kaohsiung, Taiwan
[4] Kaohsiung Med Univ, Kaohsiung Municipal Hsiao Kang Hosp, Div Internal Med, Kaohsiung, Taiwan
[5] Kaohsiung Med Univ Hosp, Ctr Canc, Kaohsiung, Taiwan
[6] Kaohsiung Med Univ, Coll Med, Fac Med, Dept Med, Kaohsiung, Taiwan