1. Department of Psychiatry, National Taiwan University Hospital, Taipei, 100, Taiwan
2. National Center for Geriatrics and Welfare Research, National Health Research Institutes, Zhunan, 350, Taiwan
3. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, 100, Taiwan
4. School of Medicine, China Medical University, Taichung, 404, Taiwan
5. Department of Occupational Safety and Health, China Medical University, Taichung, 406, Taiwan
6. Department of Public Health, China Medical University, Taichung, 406, Taiwan