Frequency of human rhinovirus (HRV) infections in children with acute respiratory infections (ARI) in day care in Ribeirão Preto, SP, Brazil - Oliveira, T. B.; Andrade, T. A.; Santos, A. E.; Schiave, L. A.; Silva, M. L.; Arruda Neto, Eurico de (Encontro Nacional de Virologia, 2003)