1. Center of Sleep Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
2. Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
3. Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
4. Department of Medicine, Taipei City Hospital Heping Fuyou Branch, Taipei, Taiwan
5. Section of Respiratory Therapy, Department of Internal Medicine, Cheng Hsin General Hospital, Taipei, Taiwan
6. Department of Radiology, Taipei City Hospital Heping Fuyou Branch, Taipei, Taiwan
7. Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan
8. Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
9. Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
10. Department of Family Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
11. Institute of Hospital and Health Care Administration, School of Medicine, National Yang-Ming University, Taipei, Taiwan
12. Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan