1. Center for Integrative Brain Research Seattle Children's Research Institute Seattle Washington USA
2. Division of Medical Genetics, Department of Medicine Veterans Affairs Greater Los Angeles Healthcare System Los Angeles California USA
3. National Human Genome Research Institute National Institutes of Health Bethesda Maryland USA
4. Division of Genetics and Metabolism, Department of Pediatrics University of Minnesota Minneapolis Minnesota USA
5. Medical Genetics Institute Cedars‐Sinai Medical Center, David Geffen School of Medicine at UCLA Los Angeles California USA
6. Medical Genetics Unit, Academic Department of Pediatrics Bambino Gesù Children's Hospital, IRCSS Rome Italy
7. Genetics and Rare Diseases Research Division Bambino Gesù Children's Hospital, IRCSS Rome Italy
8. Translational Cytogenomics Research Unit Bambino Gesù Children's Hospital, IRCCS Rome Italy
9. Department of Neuropediatrics School of Medicine, Carl Gustav Carus, TU Dresden Dresden Germany
10. Institute for Clinical Genetics University Hospital, TU Dresden Dresden Germany
11. Division of Medical Genetics, Department of Pediatrics University of Washington Seattle Washington USA
12. Brotman‐Baty Institute for Precision Medicine Seattle Washington USA
13. Institute for Stem Cell and Regenerative Medicine University of Washington Seattle Washington USA