@misc{misc1334ffcc,
title   = {Impact of the operative group procedure on HIV prevention among men who have sex with men in Sao Paulo - Brazil},
author = {Colosio, R and Fernandes, M. I. A and Bergamaschi, Denise Pimentel and Scarcelli, Ianni Regia and Lopes, I. C and Hearst, Norman},
year = {2004},
booktitle   = {International Aids Conference}
}