Silva, F. S.; Paulo, A. D. da C. de; Braga, C. de M. M.; Almeida, R. J.; Galvão, V. P. Frequency of Intestinal Parasites in the Municipality of Chapadinha, Maranhão, Brazil. Rev Patol Trop 2010, 39 (1), 63-68. https://doi.org/10.5216/rpt.v39i1.9500.