1. Division of Oral and Craniofacial Health Sciences, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
2. Division of Orthodontics, The Ohio State University College of Dentistry, Columbus, OH, USA
3. Department of Biostatistics, University of North Carolina Gillings School of Global Public Health, Chapel Hill, NC, USA
4. Division of Comprehensive Oral Health, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
5. Division of Pediatric and Public Health, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
6. Department of Periodontics, University of Iowa College of Dentistry, Iowa City, IA, USA
7. Department of Molecular Genetics and Microbiology, Center for Genomics and Computational Biology, Duke University Medical Center, Durham, NC, USA
8. Duke Eye Center and Department of Ophthalmology, Duke University Medical Center, Durham, NC, USA