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}}</ref> Penile cancer is extremely rare, and it tends to develop in men over the age of sixty.<ref>{{REFbook |last=Frisch |first=Morten |author-link=Morten Frisch |url=https://www.academia.edu/35098839/Penile_Cancer |chapter=Penile Cancer |title=Cancer Epidemiology and Prevention |editor=Thun M.J., Linet M.S., Cerhan J.S., Schottenfeld D. |edition=4 |pages=1029-1038 |publisher=Oxford University Press |location=New York |date=2018 |accessdate=2020-09-19}}</ref>