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