1. GlaxoSmithKline Korea, Seoul, Korea.
2. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
3. Division of Infectious Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, Korea.
4. Department of Infectious Disease, Chonnam National University Medical School, Gwang Ju, Korea.
5. Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.
6. Department of Internal Medicine and Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea.
7. Division of Infectious Diseases, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea.
8. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
9. Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Korea.
10. Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea.