1. Department of Infectious Diseases, Chung-Ang Medical Health Care System Hyundae Hospital, Seoul, South Korea
2. Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, South Korea
3. Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
4. Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
5. Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea