title: Barebacking: cost vs benefit analysis.
authors.forename: P
authors.initials: P
authors.lastname: Larson
mesh_terms: D017280:Condoms; D003362:Cost-Benefit Analysis; D018562:Disease Transmission, Infectious / Q000517:prevention & control*; D015658:HIV Infections / Q000191:economics / Q000517:prevention & control*; D006801:Humans; D012725:Sexual Behavior