1. Division of Epidemiology and Prevention; Aichi Cancer Center Research Institute; Nagoya Japan
2. Department of Lymphoma and Myeloma; MD Anderson Cancer Center; Houston TX
3. Department of Hematology; Toranomon Hospital; Tokyo Japan
4. Department of Cancer Therapy Center; Fukui Prefectural Hospital; Fukui Japan
5. Division of Cancer Epidemiology and Prevention; Miyagi Cancer Center Research Institute; Natori Japan
6. Center for Cancer Control and Statistics; Osaka Medical Center for Cancer and Cardiovascular Diseases; Osaka Japan
7. Division of Surveillance; Center for Cancer Control and Information Services, National Cancer Center; Osaka Japan