Contextual determinants of condom use among female sex exchangers in East Harlem, NYC: an event analysis
AIDS and Behavior (2006) - Comments
pubmed: 16779657  doi: 10.1007/s10461-006-9093-7  issn: 1090-7165  issn: 1573-3254 

James M. McMahon, Stephanie Tortu, Enrique R. Pouget, Rahul Hamid, Alan Neaigus