Affiliation: | 1. Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan;2. Graduate Institute of Long-term Care, Tzu Chi University of Science and Technology, Hualien, Taiwan Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada;3. Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda Ambulatory Care Center, North Hill, California, USA David Geffen School of Medicine at UCLA, Los Angeles, California, USA |