1. Adams, M., Jasani, B., & Fiander, A. (2009). Prophylactic HPV vaccination for women over 18 years of age. Vaccine, 27(25–26), 3391–3394.
2. Adkins, J. C., & Wagstaff, A. J. (1998). Recombinant hepatitis B vaccine: A review of its immunogenicity and protective efficacy against hepatitis B. BioDrugs, 10(2), 137–158.
3. Amaya, A., Canaval, G. E., & Viafara, E. (2005). Estigmatización de las trabajadoras sexuales: Influencias en la salud. Colombia Médica, 36(3, Supl 2), 65–74.
4. Bindel, J., & Kelly, L. (2003). A critical examination of responses to prostitution in four countries: Victoria. Australia: Child and Women Abuse Studies Unit, London Metropolitan University.
5. Brown, B., Carcamo, C., Blas, M. M., Valderrama, M., & Halsey, N. (2010). Peruvian FSWs: Understanding HPV and barriers to vaccination. Vaccine, 28(49), 7743–7747.