1. Department of Preventive and Social Dentistry, Faculty of Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil
2. Department of Oral Diagnosis, Piracicaba Dental School Campinas University Piracicaba Brazil
3. School of Dentistry University of Caxias do Sul Caxias do Sul Brazil
4. Graduate Program in Biological Sciences: Pharmacology and Therapeutics, Institute of Health Sciences Federal University of Rio Grande do Sul Porto Alegre Brazil
5. Department of Conservative Dentistry, Faculdade de Odontologia Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
6. Hematopoietic Stem Cell Transplantation Service Federal University of Rio Grande do Sul, Hospital de Clínicas de Porto Alegre Porto Alegre Brazil
7. Unit of Research Laboratorial, Experimental Research Center Hospital de Clínicas de Porto Alegre (HCPA/UFRGS) Porto Alegre Brazil
8. Department of Oral Pathology, School of Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil