1. Division of Genetic Medicine, Department of Pediatrics University of Washington Seattle Washington USA
2. Department of Genetics SCPMG Panorama City California USA
3. Division of Pediatric Neurology, Department of Neurology University of Washington Seattle Washington USA
4. General & Neuromuscular Pediatric Neurology Mary Bridge Children's Hospital Tacoma Washington USA
5. Division of Neonatology, Department of Pediatrics University of Washington Seattle Washington USA
6. Department of Neonatology Children's Hospital & Medical Center Omaha Nebraska USA
7. Department of Laboratories Seattle Children's Hospital Seattle Washington USA
8. Patient‐Centered Laboratory Utilization Guidance Services (PLUGS) Seattle Children's Hospital Seattle Washington USA
9. Division of Genetic Medicine Seattle Children's Hospital Seattle Washington USA
10. Department of Pediatrics, Section of Neurology, Alberta Children's Hospital Research Institute, Cumming School of Medicine University of Calgary Calgary Alberta Canada
11. Division of Neuromuscular Neurology, Department of Neurology University of Washington Seattle Washington USA
12. Department of Medical Genetics, Alberta Children's Hospital Research Institute, Cumming School of Medicine University of Calgary Calgary Alberta Canada
13. Department of Pediatrics, Alberta Children's Hospital Research Institute, Cumming School of Medicine University of Calgary Calgary Alberta Canada
14. Center for Developmental Biology and Regenerative Medicine Seattle Children's Research Institute Seattle Washington USA
15. Brotman Baty Institute for Precision Medicine Seattle Washington USA