1. Division of General Medicine and Geriatrics, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
2. Center for Big Data Analytics and Statistics, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
3. Department of Nephrology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
4. Department of General Surgery, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
5. Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
6. College of Medicine, Chang Gung University, Taoyuan 333, Taiwan