1. Diagnostic Center for Oral Diseases; School of Dentistry; Universidade Federal de Pelotas; Pelotas Brazil
2. Department of Oral and Maxillofacial Pathology; School of Dentistry; Universidade de Pernambuco; Camaragibe Brazil
3. Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
4. Postgraduate Program in Oral Pathology; School of Dentistry; Universidade Federal do Rio Grande do Norte; Natal Brazil