1. Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
2. Department of Laboratory Medicine, National Medical Center, Seoul, South Korea
3. Department of Laboratory Medicine, Seoul Medical Center, Seoul, South Korea
4. Department of Laboratory Medicine, Keimyung University Dongsan Medical Center, Daegu, South Korea
5. Department of Laboratory Medicine, Jeonbuk National University Medical School and Hospital, Jeonju, South Korea
6. Department of Infectious Disease, National Medical Center, Seoul, South Korea
7. Research Institute of Public Health, National Medical Center, Seoul, South Korea
8. Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea