1. General recommendations on immunization—recommendations of the Advisory Committee on Immunization Practices (ACIP);National Center for Immunization and Respiratory Diseases;MMWR Recomm Rep,2011
2. US Department of Health and Human Services; Office of Disease Prevention and Health Promotion. Healthy People 2020. Available at: http://www.healthypeople.gov/2020/topics-objectives/topic/immunization-and-infectious-diseases/objectives. Accessed November 14, 2014.
3. National, regional, state, and selected local area vaccination coverage among adolescents aged 13–17 years: United States, 2013;Elam-Evans;MMWR Morb Mortal Wkly Rep,2014
4. Santibanez TA, O'Halloran A, Zhai Y. et al. Flu vaccination coverage, United States, 2013–14 influenza season. Available at: http://www.cdc.gov/flu/fluvaxview/coverage-1314estimates.htm; 2014. Accessed March 3, 2015.
5. Population-level impact and herd effects following human papillomavirus vaccination programmes: a systematic review and meta-analysis;Drolet;Lancet Infect Dis,2015