1. Institute for Genomic Medicine Columbia University Irving Medical Center New York New York USA
2. Department of Pathology and Cell Biology Columbia University Irving Medical Center New York New York USA
3. IRCCS 'G. Gaslini' Children's Hospital Genoa Italy
4. Telethon Institute of Genetics and Medicine Pozzuoli Italy
5. Department of Translational Medicine Federico II University of Naples Naples Italy
6. Department of Clinical Genetics Odense University Hospital Odense Denmark
7. West of Scotland Centre for Genomic Medicine, Laboratory Medicine Building Queen Elizabeth University Hospital Glasgow UK
8. Division of Clinical Genetics, Department of Pediatrics Columbia University Irving Medical Center New York New York USA
9. St. George's Genomics Service St. George's University Hospitals NHS FT London UK
10. Wessex Clinical Genetics Service Southampton UK
11. HC Andersen Children's Hospital Odense University Hospital Odense Denmark
12. Department of Neurology Columbia University Irving Medical Center New York New York USA
13. Department of Medical Genetics St. George's University Hospital NHS FT London UK
14. Instituto de Genética Médica y Molecular (INGEMM) Hospital Universitario La Paz, IdiPAZ, CIBERER, ISCIII Madrid Spain
15. Department of Clinical Genetics All Wales Genomic Medicine Service, Maelor Hospital Wrexham UK
16. Department of Clinical Genetics Leiden University Medical Center Leiden The Netherlands
17. Cambridge Institute for Medical Research University of Cambridge, Addenbrooke's Hospital Cambridge UK