1. Department of Molecular and Human Genetics Baylor College of Medicine Houston TX USA
2. Division of Genetic Medicine Department of Pediatrics University of Washington Seattle WA USA
3. Department of Ophthalmology University of Washington Seattle WA USA
4. Division of Medical Genetics and Metabolism Department of Pediatrics Massachusetts General HospitalHarvard Medical School Boston MA USA
5. Department of Neurology Division of Neurogenetics Child Neurology Massachusetts General Hospital Boston MA USA
6. Division of Medical Genetics Department of Pediatrics Stanford University Stanford CA USA
7. Division of Medical Genetics Department of Pediatrics Cohen Children’s Medical Center Queens NY USA
8. Division of Medical Genetics Department of Pediatrics UPMC Children’s Hospital of Pittsburgh Pittsburgh PA USA
9. Jan and Dan Duncan Texas Children’s Neurological Research Institute Houston TX USA