Dias, Rafael André Ferreira, et al. “ Toxoplasma Gondii in Fresh Pork Sausage and Seroprevalence in Butchers from Factories in Londrina, Paraná State, Brazil ”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 47, no. 4, Aug. 2005, pp. 185-9, https://revistas.usp.br/rimtsp/article/view/30918.