1. Division of Gastroenterology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan
2. Healthy Evaluation Center, MacKay Memorial Hospital, Taipei, Taiwan
3. MacKay Medicine, Nursing and Management College, Taipei, Taiwan
4. Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
5. MacKay Medical College, Taipei, Taiwan
6. Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
7. Department of Neurology, MacKay Memorial Hospital, Taipei, Taiwan
8. Gastroenterology Division, Department of Internal Medicine, MacKay Memorial Hospital, Taitung Branch, Taiwan