1. Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
2. National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan
3. Department of Industrial Engineering and Engineering Management, College of Engineering, National Tsing Hua University, Hsinchu, Taiwan
4. Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan
5. Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan
6. Department of Safety, Health and Environmental Engineering, College of Environment and Resources, Ming Chi University of Technology, Taipei, Taiwan
7. Department of Soil and Environmental Sciences, College of Agricultural and Natural Resources, National Chung Hsing University, Taichung, Taiwan