1. Department of Urology Osaka University Graduate School of Medicine Suita Osaka Japan
2. Department of Pathology Johns Hopkins University Baltimore Maryland USA
3. Department of Urological Immuno‐Oncology Osaka University Graduate School of Medicine Suita Osaka Japan
4. Departments of Pathology and Laboratory Medicine, Urology, and Oncology University of Rochester Medical Center Rochester New York USA
5. Department of Pathology University of Alabama at Birmingham Birmingham Alabama USA