IANS Society
International Anal Neoplasia Society
iansoc.org/Basic-Facts
CDC
Centers for Disease Control and Prevention
cdc.gov/cancer/hpv/statistics/cases.htm
AIRC
Associazione Italiana per la Ricerca contro il Cancro
airc.it/news/hpv-e-cancro-un-problema-non-solo-femminile
The Estimated Lifetime Probability of Acquiring Human Papillomavirus in the United States
Harrell W. Chesson, PhD, Eileen F. Dunne, MD, MPH, Susan Hariri, PhD, Lauri E. Markowitz, MD, Sex Transm Dis. 2014 November
41(11): 660–664