National Taiwan University

Professor of Gastroenterology and Hepatology University of Iceland

Professor University of Dundee

University of Palermo

Seoul National University Hospital, Seoul, Korea

E-Da Hospital

Professor of Medicine, Leipzig University Medical Center, Division of Hepatology

Assistant Professor Endemic Hepatology and Gastroenterology, Cairo University, Egypt

Assistant Professor of Internal Medicine. Ain Shams University

West China Hospital, Sichuan University; University of Arizona