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.