Silva, Guilherme Ribeiro da, Irene Silva, and Celia Costa Guimarães. 1964. “An Outbreak of Food Poisoning Due to Salmonella Typhim-Murium in a General Hospital. I . Epidemiological Features”. Revista Do Instituto De Medicina Tropical De São Paulo 6 (6): 258-67. https://revistas.usp.br/rimtsp/article/view/202274.