Iversson, Lygia Busch, Amélia P.A. Travassos da Rosa, Jorge F.S. Travassos da Rosa, Geraldo Henriques Pinto, and Olinda Macedo. 1983. “ A Serological Study for Research into Arbovirus Antibodies in the Human Population in the Ribeira Valley: IV - Survey Among School-Children in Iguape County (S. Paulo State, Brazil) ”. Revista De Saúde Pública 17 (6): 423-35. https://doi.org/10.1590/S0034-89101983000600001.