A. T. Silva, C. L. Massara, F. G. L. Murta, Áureo A. Oliveira, and F. de O. Lara-Silva, “Enterobius vermicularis eggs in basic health unit waiting rooms and toilets in the city of New-Serrana, MG, Brazil: contributions to control”, Rev Patol Trop, vol. 42, no. 4, Jan. 2014.