Muñoza N, Castellsaguéb X, Berrington de Gonzálezc A, Gissmann L (2006). Chapter 1: HPV in the etiology of human cancer. Vaccine. 24 (3): S1—S10. doi:10.1016/j.vaccine.2006.05.115. PMID16949995.
Parkin DM (2006). The global health burden of infection-associated cancers in the year 2002. Int. J. Cancer. 118 (12): 3030—44. doi:10.1002/ijc.21731. PMID16404738.
Muñoza N, Castellsaguéb X, Berrington de Gonzálezc A, Gissmann L (2006). Chapter 1: HPV in the etiology of human cancer. Vaccine. 24 (3): S1—S10. doi:10.1016/j.vaccine.2006.05.115. PMID16949995.
Parkin DM (2006). The global health burden of infection-associated cancers in the year 2002. Int. J. Cancer. 118 (12): 3030—44. doi:10.1002/ijc.21731. PMID16404738.