1. Department of Adult Psychiatry, Kai-Suan Psychiatric Hospital, Taipei, Taiwan
2. Division of Psychiatry, National Yang-Ming University, Taipei, Taiwan
3. Department of Geriatric Psychiatry, Chai-Nan Psychiatric Center, Taipei, Taiwan
4. Department of Community Psychiatry, Pali Mental Hospital, Department of Health, Taipei, Taiwan
5. Department of Psychiatry, Yuan's General Hospital, Taipei, Taiwan
6. Community Medicine Research Center and Institute of Public Health, National Yang-Ming University, Shih-Pai, Taipei, 112, Taiwan