Safe, safer, safest: the hierarchy of sexual risk behaviors for HIV.
Ashcraft
Amie M
AM
McFarland
Willi
W
D015658:HIV Infections / Q000523:psychology* / Q000635:transmission*; D006801:Humans; D012309:Risk-Taking; D021841:Safe Sex; D012725:Sexual Behavior; D012747:Sexual Partners; D019562:Viral Load