1. Department of Internal Medicine, Pusan National University School of Medicine and Medical Research Institute, Pusan National University Hospital, Busan, Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
3. Department of Psychiatry, Kyungpook National University Children's Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
4. Division of Infectious Diseases, Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
5. Department of Preventive Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.
6. Department of Emergency Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.
7. Division of Infectious Diseases, Kyungpook National University Chilgok Hospital, Daegu, Korea.
8. Hospital Infection Control Team, Daegu Medical Center, Daegu, Korea.
9. Department of Psychiatry, National Medical Center, Seoul, Korea.
10. Division of Infectious Disease, Department of Internal Medicine, National Medical Center, Seoul, Korea.
11. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
12. Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
13. Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
14. Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
15. Division of Infectious Diseases, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
16. Department of Internal Medicine, Konyang University Hospital, Daejeon, Korea.
17. Division of Respiratory Diseases, Department of Internal Medicine, Masan Medical Center, Changwon, Korea.
18. Department of Internal Medicine, Andong Medical Center, Andong, Korea.
19. Division of Infectious Diseases, Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.
20. Department of Infectious Diseases, Chonnam National University Medical School, Gwangju, Korea.
21. Department of Psychiatry, Chonnam National University Medical School, Gwangju, Korea.
22. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, Jeju National University, Jeju, Korea.
23. Department of Counseling Psychology, Hankuk University of Foreign Studies, Seoul, Korea.