Avila-Campos, M. J., Carvalho, M. A. R. de, Magalhães, P. P., Damasceno, C. A. V., Chartone-Souza, E., & Cisalpino, E. O. (1993). Antimicrobial resistance and plasmid detection in strains of the Bacteroides fragilis group . Revista Do Instituto De Medicina Tropical De São Paulo, 35(1), 107-110. https://revistas.usp.br/rimtsp/article/view/29005