1. Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
2. Hallym University Sacred Heart Hospital, Anyang-si
3. Kyungpook National University Hospital, Daegu
4. Chonnam University Hospital, Gwangju
5. Seoul National University Hospital, Seoul
6. Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Korea