title: HIV optimism and high-risk sexual behavior in two cohorts of men who have sex with men.
authors.affiliation: Department of Psychology, Ryerson University, Toronto, Ontario, Canada.
authors.forename: Trevor A
authors.initials: TA
authors.lastname: Hart
authors.forename: Carolyn A
authors.initials: CA
authors.lastname: James
authors.forename: Carolyn M P
authors.initials: CM
authors.lastname: Hagan
authors.forename: Emilie
authors.initials: E
authors.lastname: Boucher
mesh_terms: D015331:Cohort Studies; D015658:HIV Infections / Q000635:transmission*; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012309:Risk-Taking