1. Graduate Program in Dentistry; Federal University of Pelotas; Pelotas Brazil
2. Department of Dentistry and Graduate Program in Dentistry; Federal University of Pelotas; Pelotas Brazil
3. Graduate Program in Health and Behavior; Catholic University of Pelotas; Pelotas Brazil
4. Department of Social and Preventive Dentistry and Graduate Program in Dentistry; Federal University of Pelotas; Pelotas Brazil