1. Department of Urology Hokkaido University Graduate School of Medicine Sapporo Hokkaido Japan
2. Department of Urology Kushiro City General Hospital Kushiro Hokkaido Japan
3. Hokkaido University Clinical Simulation Center Hokkaido University Graduate School of Medicine Sapporo Hokkaido Japan
4. Division of Transplantation, Immunology and Mucosal Biology Faculty of Life Sciences and Medicine King’s College London London UK