| Affiliation: | 1. Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, Connecticut;2. Down Syndrome Program, Division of Genetics, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts;3. Biostatistics Center, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts;4. Down Syndrome Program, Division of Developmental Medicine, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts;5. Beth Israel Deaconess Medical Center, Boston, Massachusetts;6. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts;7. Division of Respiratory Diseases, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts |
