Division of Gastroenterology;
Department of Internal Medicine;
Kaohsiung Medical University Hospital;
Taiwan;
China;
Department of Pharmacology;
Kaohsiung Medical University;
Taiwan;
China;
Department of Occupational Medicine and School of Public Health;
Kaohsiung Medical University;
Taiwan;
China;
Department of Clinical Pathology;
Kaohsiung Medical University Hospital;
Taiwan;
China;
Department of Internal Medicine;
Kaohsiung Municipal United Hospital;
Kaohsiung;
Taiwan;
China;