1. Genital HPV Infection - Fact Sheet. National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention Division of STD Prevention, Centers for Disease Control, Atlanta GA. Available: http://www.cdc.gov/std/hpv/stdfact-hpv.htm. Accessed August 31, 2015.
2. Human Papillomavirus (HPV) and cervical cancer: Fact sheet Number 380. World Health Organization, Geneva, Switzerland. Available: http://www.who.int/about/contacthq/en/. Accessed August 31, 2015.
3. HPV vaccine recommendations;Committee on Infectious Diseases;Pediatrics,2012
4. Reduction in human papillomavirus (HPV) prevalence among young women following HPV vaccine introduction in the United States, National Health and Nutrition Examination Surveys, 2003-2010;Markowitz;J Infect Dis,2013
5. Efficacy and safety of human papillomavirus vaccine for primary prevention of cervical cancer: a review of evidence from phase III trials and national programs;Basu;South Asian J Cancer,2013