1. Oral Pathology Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
2. TelessaúdeRS-UFRGS, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
3. Residence in Family and Community Medicine, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
4. Primary Health Care Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
5. Department of Oral Medicine, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil