Lima, Daladier Pessoa Cunha, and C. A. Santa Rosa. “A Survey for Leptospiral Antibodies in Humans from the State of Rio Grande Do Norte, Brazil”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 16, no. 5, Oct. 1974, pp. 259-64, https://revistas.usp.br/rimtsp/article/view/201174.