1. Postgraduate Program in Dentistry of Federal University of Pelotas (PPGO-UFPel); Pelotas Brazil
2. Postgraduate Program in Epidemiology; Federal University of Pelotas (PPGE-UFPel); Pelotas Brazil
3. Australian Research Centre for Population Oral Health (ARCPOH); The University of Adelaide; Adelaide SA Australia
4. Department of Preventive Medicine; Faculty of Medicine; University of São Paulo; São Paulo Brazil