1. Sciences Health Post-Graduate Program; Federal University of Rio Grande do Norte; Natal RN Brazil
2. Dentistry Department; State′s University of Rio Grande do Norte; Caicó RN Brazil
3. Health Collective Post-Graduate Program; Federal University of Rio Grande do Norte; Natal RN Brazil
4. Oral Pathology Post-Graduate Program; Dentistry Department; Federal University of Rio Grande do Norte; Natal RN Brazil