1. School of Mechanical and Electronic Engineering, Sanming University, Sanming, Fujian, China
2. Division of Hematology-Oncology, Department of Internal Medicine, Chi-Mei Medical Center, Liouying, Tainan, Taiwan
3. Department of Senior Welfare and Services, Southern Taiwan University of Science and Technology, Tainan, Taiwan
4. Department of Environmental and Occupational Health, National Cheng Kung University, Tainan, Taiwan
5. Department of Occupational Medicine, Chi-Mei Medical Center, Tainan, Taiwan
6. Department of Occupational Medicine, Tainan Municipal Hospital (Managed By Show Chwan Medical Care Corporation), Tainan, Taiwan
7. Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan