1. How many cancers are linked with HPV each year? [Internet] Available from www.cdc.gov/cancer/hpv/statistics/cases.htm.
2. Cancer incidence in five continents: inclusion criteria highlights from volume X and the global status of cancer registration;Bray;Int. J. Cancer,2015
3. Chapter 29 bivalent HPV vaccine approved for cervical cancer prevention in females;Fernandez,2016
4. Chapter 30 quadrivalent and nonavalent HPV vaccine approved for males and females for HPV associated diseases;LaJoie,2016
5. Gardasil9 package insert [Internet] Available from http://www.fda.gov/downloads/biologicsbloodvaccines/vaccines/approvedproducts/ucm426457.pdf.