1. Division of Family Medicine, Department of Community Medicine, Taiwan Landseed Hospital, Tao-Yuan, Taiwan.
2. Division of Nephrology, Department of Medicine, Taiwan Landseed Hospital, Tao-Yuan, Taiwan.
3. Department and Graduate Institute of Health Care Management, Chang Gung University, Tao-Yuan, Taiwan.
4. Department of Occupational Medicine, Taiwan Landseed Hospital, Tao-Yuan, Taiwan.
5. Department of Public Health, Chung Shan Medical University, Taichung, Taiwan.
6. Department of Family and Community Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan.