Willingness to participate in vaccine trials among MSM in São Paulo, Brazil

Springer Science and Business Media LLC - Tập 9 - Trang 1-1 - 2012
G Calazans1, A Kalichman1, M Veras2, R Gamboa1, M Ribeiro2
1Sao Paulo HVTU - CRT-DST/AIDS, São Paulo, Brazil
2School of Medical Sciences, Santa Casa de São Paulo, Brazil