1. Department of Molecular and Human Genetics Baylor College of Medicine Houston Texas
2. Texas Children's Hospital Houston Texas
3. Le Bonheur Children's Hospital Memphis Tennessee
4. Division of Medical Genetics, Department of Pediatrics University of Tennessee Health Science Center Memphis Tennessee
5. Department of Genetics Kaiser Permanente San Francisco California
6. Division of Clinical and Translational Genetics, Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine University of Miami Miami Florida
7. Jackson Memorial Hospital Miami Florida
8. Section of Child Neurology, Department of Neurology Indiana University School of Medicine Indianapolis Indiana
9. Institute of Rare Diseases & Danek Gertner Institute of Human Genetics Sheba Medical Center Tel‐Hashomer Israel
10. The Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
11. Clinical Genetics Unit Great Ormond Street Hospital for Children NHS Trust London UK
12. Division of Neurogenetics, Department of Neurology Kennedy Krieger Institute and Johns Hopkins University School of Medicine Baltimore Maryland
13. Genetics Center Orange California
14. Division of Medical Genetics Children's Hospital of Orange County Orange California
15. Department of Pediatrics Baylor College of Medicine Houston Texas
16. Human Genome Sequencing Center Baylor College of Medicine Houston Texas