David Soper, Clinical Study, Reducing the Health Burden of HPV Infection through Vaccination, Hindawi Publishing Corporation Infectious Diseases in Obstetrics and Gynecology, Volume 2006, Article ID 83084, Pages 1–5-DOI 10.1155/IDOG/2006/83084

Bosch FX, Manos MM, Muñoz N, Sherman M, Jansen AM, Peto J, Schiffman MH, Moreno V, Kurman R, Shah KV - Prevalence of human papillomavirus in cervical cancer: a worldwide perspective. International biological study on cervical cancer (IBSCC) Study Group - Journal of the National Cancer Institute - 1995 Jun 7;87(11):796-802.

Kelly Madden∗, Xiaoli Nan, Rowena Briones, Leah Waks, Sorting through search results: A content analysis of HPV vaccine information online, Vaccine (2011), doi:10.1016/j.vaccine.2011.10.025

M. Stanley, Human Papillomavirus Vaccines versus Cervical Cancer Screening, Clinical Oncology (2008) 20: 388e394, doi:10.1016/j.clon.2008.04.006