1 Professor of Oral Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ), Brazil.
2 Retired Professor of Oral Pathology, School of Dentistry, Federal University of Rio de Janeiro (UFRJ) and State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil; Professor of Oral Pathology, School of Dentistry, Veiga de Almeida University (UVA), Rio de Janeiro, Brazil.