1. Department of Pediatric Dentistry and Orthodontics; Dental School; University of São Paulo-USP; São Paulo Brazil
2. Department of Epidemiology and Public Health; University College London; London UK
3. Department of Pediatric Dentistry and Orthodontics; Dental School; Federal University of Minas Gerais; Belo Horizonte Minas Gerais Brazil
4. Department of Pediatric Dentistry and Orthodontics; Dental School; Methodist University of São Paulo; São Paulo Brazil