An analysis of clinical predictive values for radiographic pneumonia in children por Rees, CA, Basnet, S, Gentile, A, Gessner, BD, Kartasasmita, CB, Lucero, M, Martinez, L, O'Grady, K-AF, Ruvinsky, RO, Turner, C, Campbell, H, Nair, H, Falconer, J, Williams, LJ, Horne, M, Strand, T, Nisar, YB, Qazi, SA, Neuman, MI, World Health Organization PREPARE study group