title: Clifford et al. respond to "Biological and clinical insights from epidemiologic research into HIV, HPV, and anal cancer".
authors.forename: Gary
authors.initials: G
authors.lastname: Clifford
authors.forename: Barbara
authors.initials: B
authors.lastname: Bertisch
authors.forename: Silvia
authors.initials: S
authors.lastname: Franceschi
mesh_terms: D023241:Antiretroviral Therapy, Highly Active / Q000706:statistics & numerical data*; D001005:Anus Neoplasms / Q000209:etiology*; D005260:Female; D015658:HIV Infections / Q000150:complications*; D006801:Humans; D008297:Male; D030361:Papillomavirus Infections / Q000150:complications*; D012907:Smoking / Q000009:adverse effects*; D015819:Substance Abuse, Intravenous / Q000150:complications*