Missed opportunities for prevention of mother-to-child transmission of human immunodeficiency virus type 1 in Latin America and the Caribbean: the NIDSI perinatal study - D'Ippolito, Marcos; Read, Jennifer S.; Korelitz, James; João, Esau Custódio; Mussi-Pinhata, Marisa Márcia; Rocha, Neiva (Pediatric Infectious Disease Journal, 2007)