1. Graduate Program in Dentistry – Oral Pathology, School of Dentistry Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
2. TelessaúdeRS‐UFRGS l Graduate Program in Epidemiology Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
3. Dental Specialty/Oral Medicine Center Porto Alegre City Hall Porto Alegre Brazil
4. Oral Medicine, Otorhinolaryngology Service Hospital de Clínicas de Porto Alegre (HCPA) Porto Alegre Brazil