1. Department of Urology, Seoul Veterans Hospital, Seoul, Korea
2. Department of Pathology, Seoul Veterans Hospital, Seoul, Korea
3. Department of Pathology, National University College of Medicine, Seoul National University Hospital, Seoul, Korea
4. Department of Internal Medicine, National University College of Medicine, Seoul National University Hospital, Seoul, Korea
5. Department of Pharmacology, National University College of Medicine, Seoul National University Hospital, Seoul, Korea
6. Department of Urology, National University College of Medicine, Seoul National University Hospital, Seoul, Korea