Rengifo, S. A., Silva, R. A. da, Pereira, I. A., Zegarra, J. Q., Souza, M. M. de, & Botteon, R. de C. C. M. (2006). Microorganisms isolated from blood samples and umbilical structures of newborns calves. Brazilian Journal of Veterinary Research and Animal Science, 43(4), 442-447. https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26458