AVILA-CAMPOS, Mario J., and Gustavo VELÁSQUEZ-MELÉNDEZ. 2002. “ Prevalence of Putative Periodontopathogens from Periodontal Patients and Healthy Subjects in São Paulo, SP, Brazil ”. Revista Do Instituto De Medicina Tropical De São Paulo 44 (1): 1-5. https://revistas.usp.br/rimtsp/article/view/30588.