1. 1. WHO Comprehensive cervical cancer prevention and control: a healthier future for girls and women (http://www.who.int/reproductivehealth/topics/cancers/en/).
2. 2. WHO Human papillomavirus and HPV vaccines: technical information for policy-makers and health professionals (http://whqlibdoc.who.int/hq/2007/WHO_IVB_07.05_eng.pdf).
3. 3. The OECD Health Care Quality Indicators project: Cancer Care, Screening survival and mortality for cervical cancer, cervical cancer screening, percentage of women aged 20–69 screened. http://www.oecd.org/health/health-systems/healthcarequalityindicators.htm.
4. 4. Ministry of Health, Labor and Welfare, Japan. http://www.mhlw.go.jp/toukei/saikin/hw/k-tyosa/k-tyosa10/toukei.html.
5. 5. Center for Cancer Control and Information Services, National Cancer Center, Japan. http://ganjoho.jp/pro/statistics/en/gdball.html?1%2%1.