Costa, Maria Fernanda Furtado de Lima e, et al. “ Evolution of Schistosomiasis in an Hyperendemic Area of the Minas Gerais State: Two Cross-Sectional Studies ”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 27, no. 5, Oct. 1985, pp. 279-85, https://www.revistas.usp.br/rimtsp/article/view/87421.