1. Department of Preventive and Community Dentistry, University of Buenos Aires, Buenos Aires, Argentina
2. Pharmacy, Dentistry and Nursing College, Federal University of Ceara, Fortaleza, Brazil
3. Nova Esperança Nursing College (FACENE), Mossoró, Brazil
4. Paulo Picanço College of Dentistry, Fortaleza, Brazil
5. Unichristus, Fortaleza, Brazil