1. Center for Cancer Control and Statistics Osaka Medical Center for Cancer and Cardiovascular Diseases OsakaJapan
2. Division of Epidemiology and Prevention Aichi Cancer Research Institute NagoyaJapan
3. Department of Urology Osaka Medical Center for Cancer and Cardiovascular Diseases OsakaJapan
4. Department of Cancer Epidemiology and Community Health Hirosaki University Graduate School of Medicine HirosakiJapan
5. Department of Cancer Therapy Center Fukui Prefectural Hospital FukuiJapan
6. Department of Epidemiology Radiation Effects Research Foundation HiroshimaJapan
7. Division of Epidemiology Miyagi Cancer Center Research Institute NatoriJapan
8. Surveillance Division Center for Cancer Control and Information Services National Cancer Center Tokyo Japan