title: Research design determines what can be known about modes of HIV transmission.
authors.forename: Devon D
authors.initials: DD
authors.lastname: Brewer
authors.forename: John J
authors.initials: JJ
authors.lastname: Potterat
authors.forename: Stuart
authors.initials: S
authors.lastname: Brody
mesh_terms: D004866:Equipment Contamination; D015658:HIV Infections / Q000635:transmission*; D006801:Humans; D007267:Injections / Q000009:adverse effects; D012107:Research Design; D012725:Sexual Behavior