1. Institute of Public Health, National Yang-Ming University, Taipei, Taiwan;
2. Department of Psychiatry, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan;
3. Division of Cardiology, Department of Internal Medicine & Community Medicine Center, National Yang-Ming University Hospital, Yilan, Taiwan;
4. Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan;
5. Community Medicine Research Center, National Yang-Ming University, Taipei, Taiwan;
6. Department of Psychiatry & Center of Sleep Disorders, National Taiwan University Hospital, Taipei, Taiwan