1. Department of Dental Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
2. Department of Pediatric Dentistry, University of Pittsburgh, Pittsburgh, Pennsylvania
3. Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill
4. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill
5. Department of Cariology, Restorative Sciences and Endodontics, University of Michigan School of Dentistry, Ann Arbor