| Affiliation: | 1. Faculty of Health Care, Takasaki University of Health and Welfare, Gunma, 501,Nakaorui-Machi, Takasaki, Japan;2. School of Health Sciences, Gunma University, 3-39-22, Showa-machi, Maebashi, Gunma, Japan;3. Department of Obstetrics and Gynecology, Hirosaki University School of Medicine, 5, Zaifu-cho, Hirosaki, Aomori, Japan;4. School of Public Health, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan;5. Center for Cancer Control and Information Service, National Cancer Center, 5-1-1, Tsukiji, Chuo-ku, Tokyo, Japan;6. Faculty of Medicine, Gunma University, 3-39-22, Showa-machi, Maebashi, Gunma, Japan |
