1. Baldur-Felskov, B., Dehlendorff, C., Munk, C. & Kjaer, S.K. (2014) Early impact of human papillomavirus vaccination on cervical neoplasia: nationwide follow-up of young Danish women. J. Natl. Cancer Inst., 106, djt460.
2. Crowe, E., Pandeya, N., Brotherton, J.M., Dobson, A.J., Kisely, S., Lambert, S.B. & Whiteman, D.C. (2014) Effectiveness of quadrivalent human papillomavirus vaccine for the prevention of cervical abnormalities: case-control study nested within a population based screening programme in Australia. BMJ, 348, g1458.
3. Future II Study Group (2007) Quadrivalent vaccine against human papillomavirus to prevent high-grade cervical lesions. N. Engl. J. Med., 356, 1915-1927.
4. Hanley, S., Yoshioka, E., Ito, Y. & Kishi, R. (2015) HPV vaccination crisis in Japan. Lancet, 385, 2571.
5. Joura, E.A., Giuliano, A.R., Iversen, O.E., Bouchard, C., Mao, C., Mehlsen, J., Moreira, E.D. Jr., Ngan, Y., Petersen, L.K., Lazcano-Ponce, E., Pitisuttithum, P., Restrepo, J.A., Stuart, G., Woelber, L., Yang, Y.C. et al. (2015) A 9-Valent HPV Vaccine against Infection and Intraepithelial Neoplasia in Women. N. Engl. J. Med., 372, 711-723.