title: Problems with anal cancer demographics.
authors.forename: J H
authors.initials: JH
authors.lastname: Scholefield
authors.forename: J D
authors.initials: JD
authors.lastname: Kettner
authors.forename: J M
authors.initials: JM
authors.lastname: Northover
mesh_terms: D001005:Anus Neoplasms / Q000453:epidemiology* / Q000473:pathology; D006801:Humans; D008297:Male; D012725:Sexual Behavior