Effect of air pollution on pediatric respiratory emergency room visits and hospital admissions - Farhat, S. C. L.; Paulo, R. L. P.; Shimoda, T. M.; Conceição, Gleice Margarete de Souza; Lin, Chin An; Braga, A. L. F.; Warth, M. P. N.; Saldiva, Paulo Hilário Nascimento (Brazilian Journal of Medical and Biological Research, 2005)