1 Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil.
2 Oral Medicine, Department of Diagnosis and Surgery, Araraquara Dental School, Universidade Estadual Paulista (UNESP), São Paulo, Brazil.
3 Pathology Department, Dermatopathology Division, School of Medical Sciences, UNICAMP, Sao Paulo, Brazil.
4 Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil. Electronic address: pavargas@fop.unicamp.br.