Castro, A. F. Pestana de, E. A. Santa Rosa, W. Ferreira de Almeida, and Cyro Troise. 1966. “Research of Antileptospiral Antibodies Among Butchers in Some Towns of the State of São Paulo”. Revista Do Instituto De Medicina Tropical De São Paulo 8 (6): 287-90. https://revistas.usp.br/rimtsp/article/view/202017.