[1] Kaohsiung Med Univ, Kaohsiung Med Univ Hosp, Dept Internal Med, Hepatobiliary Div, Kaohsiung, Taiwan
[2] Kaohsiung Med Univ, Kaohsiung Med Univ Hosp, Dept Occupat & Environm Med, Kaohsiung, Taiwan
[3] Kaohsiung Med Univ, Kaohsiung Med Univ Hosp, Hlth Management Ctr, Kaohsiung, Taiwan
[4] Kaohsiung Med Univ, Coll Med, Fac Internal Med, Kaohsiung, Taiwan
[5] Changhua Christian Hosp, Dept Med, Div Hematol Oncol, Changhua, Taiwan
[6] Changhua Christian Hosp, Dept Gen Surg, 135 NanHsiao St, Changhua 500, Taiwan
[7] Kaohsiung Med Univ Hosp, Dept Surg, Div HBP Surg, Kaohsiung, Taiwan