1. Division of Epidemiology and Prevention Aichi Cancer Centre Research Institute NagoyaJapan
2. Surveillance Division Centre for Cancer Control and Information Services National Cancer Centre TokyoJapan
3. Department of Clinical Oncology Hamamatsu University School of Medicine HamamatsuJapan
4. Department of Pathology Nagoya University Graduate School of Medicine NagoyaJapan
5. Department of Environmental Medicine and Population Science Osaka University Graduate School of Medicine Osaka Japan
6. Division of Cancer Epidemiology and Genetics National Cancer Institute NIH DHHS Rockville MDUSA
7. Department of Pathology City of Hope National Medical Center Duarte CA USA
8. Department of Preventive Medicine Kyushu University Faculty of Medical Sciences Fukuoka Japan