Comparison of direct immunofluorescence, conventional cell culture and polymerase chain reaction techniques for detecting respiratory syncytial virus in nasopharyngeal aspirates from infants - Reis, Alexandra Dias; Fink, Maria Cristina Domingues da Silva; Machado, Clarisse Martins; Paz Junior, José de Paula; Oliveira, Renato Reis; Tateno, Adriana Fumie; Machado, Adriana Freire; Cardoso, Maria Regina Alves; Pannuti, Claudio Sérgio (Revista do Instituto de Medicina Tropical, 2008)