1. Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
2. Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
3. Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
4. School of Biological Sciences, University of Ulsan, Ulsan, Korea.
5. Department of Obstetrics & Gynecology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
6. Department of Urology, Stanford University Medical Center, Palo Alto, CA, USA.