1. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
3. Division of infectious disease, Department of internal medicine, Hallym Sacred Heart Hospital, Anayang, Korea.
4. Department of Neurology, Dae-Chung Hospital, Daejeon, Korea.
5. Department of Microbiology and Immunology, Department of Biomedical Science, Seoul National University College of Medicine and Bundang Hospital, Seoul, Korea.
6. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, Chungbuk National University, Cheongju, Korea.
7. Division of Infectious diseases, Department of Internal Medicine, Eulji University hospital, Daejeon, Korea.
8. Division of Infectious diseases, Department of Internal Medicine, College of Medicine, Hallym University, Seoul, Korea.