1. Department of Occupational Medicine, School of Occupational Safety and Health, Chung Shan Medical University, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
2. Graduate Institute of Environmental Health, College of Public Health, China Medical University and Hospital, Taichung 40402, Taiwan
3. Department of Nutrition, Mennonite Christian Hospital, Shoufeng Branch, Hualien 974, Taiwan
4. Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan
5. Institute of Occupational Safety and Health, Council of Labor Affairs, Executive Yuan, Taipei 22143, Taiwan
6. Department of Nutrition, School of Nutrition, Chung Shan Medical University, Chung Shan Medical University Hospital, Taichung 40201, Taiwan