[1] Kaohsiung Vet Gen Hosp, Dept Internal Med, Kaohsiung 813, Taiwan
[2] Chang Gung Univ, Dept Internal Med, Coll Med, Kaohsiung 833, Taiwan
[3] Kaohsiung Vet Gen Hosp, Dept Internal Med, Div Gastroenterol & Hepatol, Kaohsiung 813, Taiwan
[4] China Med Univ, Dept Internal Med, An Nan Hosp, Div Gastroenterol & Hepatol, 66,Sec 2,Changhe Rd, Tainan 709, Taiwan
[5] Kaohsiung Chang Gung Mem Hosp, Dept Radiat Oncol, Kaohsiung 833, Taiwan
[6] Chang Gung Univ, Coll Med, Kaohsiung 833, Taiwan