1. Post-Graduate Program in Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
2. Australian Research Centre for Population Oral Health (ARCPOH); School of Dentistry; The University of Adelaide; Adelaide Australia
3. Department of Cariology, Restorative Sciences and Endodontics; School of Dentistry; University of Michigan; Ann Arbor MI USA
4. Post-Graduate Program in Epidemiology; Federal University of Pelotas; Pelotas Brazil