Moura, H. de, Salazar, H. C., Fernandes, O., Lisboa, D. C., & Carvalho, F. G. de. (1985). Free-living amoebae in human bowel: evidence of parasitism . Revista Do Instituto De Medicina Tropical De São Paulo, 27(3), 150-156. https://www.revistas.usp.br/rimtsp/article/view/87374