Lima e Costa, M. F. F., Rocha, R. S., Leite, M. L. C., Carneiro, R. G., Colley, D., Gazzinelli, G., & Katz, N. (1991). A multivariate analysis of socio-demographic factors, water contact patterns and Schistosoma mansoni infection in an endemic area in Brazil . Revista Do Instituto De Medicina Tropical De São Paulo, 33(1), 58-63. https://revistas.usp.br/rimtsp/article/view/28793