1. Department of Public Health, China Medical University, Taichung, Taiwan
2. Department of Epidemiology, University of Texas School of Public Health, Houston, TX
3. Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei, Taiwan
4. Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan
5. Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan