1 Duke Department of Pediatrics, Duke University, Durham, North Carolina; Duke Department of Surgery, Duke University, Durham, North Carolina.
2 Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio; Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, Ohio; Division of Pediatric Dentistry and Orthodontics, Children's Hospital Medical Center, Cincinnati, Ohio.
3 Division of Pediatric Densitry, The Ohio State University, College of Dentistry, Columbus, Ohio.
4 Center for Craniofacial Disorders, Children's Healthcare of Atlanta, Atlanta, Georgia.