1. Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, Hanyang University, Seoul, Korea.
3. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
4. Division of Infectious Diseases, Department of Internal Medicine, Inje University Sanggye-Paik Hospital, Seoul, Korea.
5. Department of Urology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
6. Department of Urology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea.
7. Department of Urology, Inje University College of Medicine, Pusan, Korea.
8. Department of Urology, National Police Hospital, Seoul, Korea.
9. Center for Preventive Medicine and Public Health, Seoul National University Bundang Hospital, Seongnam, Korea.
10. Division of Infectious Diseases, Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.