1. Health Sciences Faculty, University of Brasília, Brasília, Brazil
2. Faculty of Dentistry, Federal University of Goiás, Goiânia, Brazil
3. School of Dentistry, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada
4. Brazilian Centre for Evidence-Based Research, Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil