1. Department of Oral Pathology and Oral Medicine School of Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil
2. School of Dentistry University of Caxias do Sul Caxias do Sul RS Brazil
3. Full Professor of Pharmacology Invited Professor Department of Conservative Dentistry Federal University of Rio Grande do Sul Porto Alegre Brazil
4. Cancer and Neurobiology Laboratory Experimental Research Center Porto Alegre Clinical Hospital Federal University of Rio Grande do Sul Porto Alegre Brazil
5. Children’s Cancer Institute Porto Alegre Brazil
6. Department of Oral Medicine Porto Alegre Clinical Hospital (HCPA/UFRGS) Porto Alegre Brazil
7. Department of Pediatric Oncology Porto Alegre Clinicas Hospital (HCPA/UFRGS) Porto Alegre Brazil
8. Pediatric Oncology Service Porto Alegre Clinical Hospital (HCPA/UFRGS) Porto Alegre Brazil