Commentary on Schroder et al. (2003a, 2003b).
Catania
Joseph A
JA
AIDS Research Institute and Center for AIDS Prevention Studies, Department of Medicine, University of California, San Francisco 94105, USA. jcatania@psg.ucsf.edu
Osmond
Dennis
D
Neilands
Torsten B
TB
Canchola
Jesse
J
Gregorich
Steven
S
Shiboski
Stephen
S
D015658:HIV Infections / Q000523:psychology*; D006801:Humans; D008960:Models, Psychological; D012309:Risk-Taking; D012725:Sexual Behavior / Q000523:psychology*