1. Division of Prevention, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan.
2. Division of Cohort Research, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan.
3. Division of Cancer Statistics Integration, Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan.
4. National Cancer Registry Section, Center for Cancer Registries, Center for Cancer Control and Information Services/Office of International Affairs, Strategic Planning Bureau National Cancer Center, National Cancer Center, Tokyo, Japan.