1. Department of Family Medicine Mackay Memorial Hospital Taipei Taiwan
2. Department of Occupation Medicine Mackay Memorial Hospital Taipei Taiwan
3. Mackay Junior College of Medicine, Nursing, and Management New Taipei Taiwan
4. Department of Family Medicine and Occupation Medicine Lian‐Xin Clinic Taoyuan Taiwan
5. Department of Medicine Mackay Medical College New Taipei Taiwan
6. Department of Occupational Safety &Health Mackay Memorial Hospital Taipei Taiwan
7. Department of Community Health Center Mackay Memorial Hospital Taipei Taiwan