Affiliation: | 1. Department of Oral Pathology, University of S?o Paulo School of Dentistry, , S?o Paulo, Brazil;2. Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, , Ann Arbor, MI, USA;3. Department of Otolaryngology, Head and Neck Surgery, Stanford School of Medicine, , Stanford, CA, USA;4. Department of Oral Pathology, Federal University of Rio de Janeiro, , Rio de Janeiro, Brazil |