1. Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
2. Section of Urologic Oncology, Rutgers Cancer Institute of New Jersey and Division of Urology, Rutgers Robert Wood Johnson Medical School, Rutgers, State University of New Jersey, New Brunswick
3. Department of Biostatistics, Rutgers School of Public Health, Piscataway, New Jersey
4. Department of Urology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
5. Department of Urology, Chungbuk National University College of Medicine, Cheongju, Republic of Korea