1. Division of Gastroenterology, Department of Medicine; Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation; Chiayi Taiwan
2. School of Medicine; Tzu Chi University; Hualien Taiwan
3. Division of Gastroenterology, Department of Medicine, Sepulveda Ambulatory Care Center; Veterans Affairs Greater Los Angeles Healthcare System; North Hill California
4. Division of Gastroenterology, Department of Medicine; David Geffen School of Medicine at UCLA; Los Angeles California