1. Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
2. Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan
3. Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung, Taiwan
4. Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
5. Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan, Taiwan