1. Department of Hospital Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
2. Division of Infectious Disease, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine, Seoul, Korea
3. Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
4. Division of Infectious Disease, Department of Internal Medicine, Chungnam National University, School of Medicine, Daejeon, Korea
5. Department of Internal Medicine, Jeju National University School of Medicine, Jeju, Korea
6. Division of Infectious Disease, Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
7. Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, Korea
8. Department of Psychiatry, National Medical Center, Seoul, Korea