1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei , Taiwan
2. Department of Health Behavior, Environment, and Social Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
3. Department of Internal Medicine, School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
4. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
5. School of Public Health, College of Public Health, Taipei Medical University, Taipei, Taiwan