1. Department of Psychiatry, Taipei City Hospital Sonde Branch , Taipei , Taiwan
2. Division of Cardiology, Department of Internal Medicine & Community Medicine Center, National Yang Ming Chiao Tung University Hospital , Yilan , Taiwan
3. Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University , Taipei , Taiwan
4. Public Health Bureau , Yilan County , Taiwan
5. Department of Medical Research, Taichung Veterans General Hospital , Taichung , Taiwan
6. Department of Psychiatry & Center of Sleep Disorders, National Taiwan University Hospital , Taipei , Taiwan