1. Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia;
2. National Fragile X Foundation, Washington, District of Columbia;
3. National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia;
4. Departments of Pediatrics,
5. Neurological Sciences, and
6. Biochemistry, Rush University Medical Center, Chicago, Illinois;
7. Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, New York;
8. Division of Genetics and Genomics, Boston Children’s Hospital, Boston, Massachusetts;
9. Department of Neurology, Boston Children’s Hospital, Boston Massachusetts;
10. Center for Translational Research, Greenwood Genetic Center, Greenwood, South Carolina; and
11. Department of Human Genetics, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York