1. Department of Family Medicine Taichung Veterans General Hospital Taichung Taiwan
2. School of Medicine National Yang Ming Chiao Tung University Taipei Taiwan
3. Department of Post‐Baccalaureate Medicine, College of Medicine National Chung Hsing University Taichung Taiwan
4. Department of Family Medicine Taichung Armed Forces General Hospital Taichung Taiwan
5. College of Medicine National Defense Medical Center Taipei Taiwan
6. Institute of Medicine Chung Shan Medical University Taichung Taiwan
7. Department of Allergy, Immunology and Rheumatology Chung Shan Medical University Hospital Taichung Taiwan
8. Graduate Institute of Integrated Medicine China Medical University Taichung Taiwan