1. Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, Taiwan;
2. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Feng Yuan Hospital Ministry of Health and Welfare, Taichung, Taiwan;
3. Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan;
4. College of Medicine, China Medical University, Taichung, Taiwan;
5. Graduate Institute of Clinical Medical Science and School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan;
6. Department of Radiation Oncology, China Medical University Hospital, Taichung, Taiwan