1. World Health Organization ICO Human Papillomavirus and Related Cancers in Georgia. Summary Report 2010 http://www.who.int/hpvcentre/statistics/dynamic/ico/country_pdf/GEO.pdf
2. World Health Organization ICO Human Papillomavirus and Related Cancers in United States of America. Summary Report 2010 http://apps.who.int/hpvcentre/statistics/dynamic/ico/country_pdf/USA.pdf
3. World Health Organization ICO Human Papillomavirus and Related Cancers in United Kingdom. Summary Report 2010 http://www.who.int/hpvcentre/statistics/dynamic/ico/country_pdf/GBR.pdf
4. World Health Organization ICO Human Papillomavirus and Related Cancers in Canada. Summary Report 2010 http://www.who.int/hpvcentre/statistics/dynamic/ico/country_pdf/CAN.pdf
5. U.S. Preventive Services Task Force Screening for Cervical Cancer Recommendations and Rationale http://www.ahrq.gov/clinic/3rduspstf/cervcan/cervcanrr.htm