1. Department of Urology Iwate Prefectural Central Hospital 4‐1 Morioka‐shi Iwate Japan
2. Department of Urology Iwate Medical University School of Medicine 2‐1‐1 Shiwa‐gun Iwate Japan
3. Department of Pathology Iwate Prefectural Central Hospital 4‐1 Morioka‐shi Iwate Japan