1. Department of Nursing, Hungkuang University, Taiwan; Department of Medical Research, China Medical University Hospital, Taiwan
2. Institute of Environmental and Occupational Health Sciences, National Yang Ming Chao Tung University, Taiwan; Health Promotion Administration, Ministry of Health and Welfare, Taiwan
3. Department of Health Services Administration, China Medical University, Taiwan
4. Institute of Environmental and Occupational Health Sciences, National Yang Ming Chao Tung University, Taiwan; Resource Circulation Administration, Ministry of Environment, Taiwan
5. Institute of Environmental and Occupational Health Sciences, National Yang Ming Chao Tung University, Taiwan; Institute of Public Health, National Defence University, Taiwan