Silva, Guilherme Rodrigues da, et al. “Salmonella Typhi-Murium Food Poisoning Epidemics in a General Hospital . II – Clinical Study”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 7, no. 3, June 1965, pp. 131-5, https://revistas.usp.br/rimtsp/article/view/202090.