Fighting HIV/AIDS in a developing country: lessons from a small cohort from the largest Brazilian city oleh Jorge Casseb, Ana Paula R. Veiga, Marcello M. C. Magri, Mariana A. Monteiro, Rosana C. Rocha, Maria Rita P. Gascon, Mauricio Domingues-Ferreira, Thales J. B. Polis, Najara A. de Lima Nascimento, Isadora Limongelli, Ícaro S. Oliveira, Gabriela Caetano Prandi, Livia M. C. B. Villares Costa, Luiz A. M. Fonseca, Alberto J. S. Duarte