1. Departments of Urology and Renal Transplantation; Yokohama City University Medical Center; Yokohama Japan
2. Department of Urology; Yokohama City University Graduate School of Medicine; Yokohama Japan
3. Department of Urology; Kanagawa Cancer Center; Yokohama Japan
4. Division of Diagnostic Pathology; Yokohama City University Medical Center; Yokohama Kanagawa Japan