1. Division of Cancer Information and Control Department of Preventive Medicine Aichi Cancer Center Research Institute Nagoya Japan
2. Division of Cancer Epidemiology and Prevention Department of Preventive Medicine Aichi Cancer Center Research Institute Nagoya Japan
3. Department of Cancer Epidemiology Nagoya University Graduate School of Medicine Nagoya Japan
4. Department of Gastroenterology Aichi Cancer Center Hospital Nagoya Japan
5. Department of Gastroenterological Surgery Aichi Cancer Center Hospital Nagoya Japan
6. Aichi Cancer Center Research Institute Nagoya Japan
7. Department of Descriptive Cancer Epidemiology Nagoya University Graduate School of Medicine Nagoya Japan