Affiliation: | a Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil;b Anaerobe Laboratory, Department of Microbiology, Institute of Biomedical Science, University of São Paulo, São Paulo, SP, Brazil;c Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil |