1. Department of Pediatric Dentistry; School of Dentistry; Cruzeiro do Sul University-UNICSUL; São Paulo SP Brazil
2. Department of Medicine, Division of Biostatistics; School of Medicine; Indiana University; Indianapolis IN USA
3. Department of Cariology, Restorative Sciences and Endodontics; School of Dentistry; University of Michigan; Ann Arbor MI USA
4. Department of Pediatric Dentistry; Araraquara School of Dentistry; São Paulo State University-UNESP; Araraquara SP Brazil
5. Department of Operative Dentistry; School of Dentistry; University of North Carolina; Chapel Hill NC USA