1. University of North Carolina Craniofacial Center, Department of Dental Ecology at the School of Dentistry, and Department of Otolaryngology at the School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
2. University of North Carolina Craniofacial Center, and Department of Surgery, School of Medicine, Department of Dental Ecology in the School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
3. University of North Carolina Craniofacial Center, Department of Dental Ecology, Department of Medical Allied Health Professions at the School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.