1. MRC Human Genetics Unit; Medical Research Council and Institute of Genetics and Molecular Medicine; University of Edinburgh; Edinburgh; Scotland; UK
2. West Midlands Regional Genetics Laboratory; Birmingham Women's Hospital; Birmingham; UK
3. Centre for Rare Diseases and Personalised Medicine, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences; University of Birmingham; Edgbaston; Birmingham; UK
4. Institute of Human Genetics; University of Ulm; Ulm; Germany
5. Molecular Genetics Section; Hospital Sant Joan de Deu; Barcelona; Spain
6. Department of Obstetrics and Gynaecology; University of Brescia; Spedali Civili; Brescia; Italy
7. Division of Medical Genetics; Galliera Hospital; Genova; Italy
8. Department of Child Neurology and Psychiatry; Spedali Civili; Brescia; Italy
9. Department of Neuroradiology; Spedali Civili; Brescia; Italy
10. Schneider Children's Medical Center of Israel and Raphael Recanati Genetics Institute; Rabin Medical Center; Beilinson Campus; Petah Tiqva; Israel
11. Department of Clinical Genetics; Human Genetics and Genome Research Division; National Research Centre; Cairo; Egypt
12. Pediatric Neurology Unit; Department of Pediatrics; UZ; Brussel
13. Department of Medical Genetics; Sydney Children's Hospital; Sydney; Australia
14. Division of Genetics and Developmental Medicine; Department of Pediatrics; University of Washington; Seattle; USA
15. Clinical Genetics; Churchill Hospital; Oxford; UK
16. Department of Genetics; Erasmus University Medical Center; Rotterdam; The Netherlands
17. Institut de Pathologie et de Génétique; Gosselies; Belgium
18. Centre Hospitalier Universitaire de Nice; Hopital de l'Archet 2; Nice; France
19. Department of Clinical Genetics; Amsterdam Medical Center; Amsterdam; The Netherlands
20. Division of Clinical Genetics and Dysmorphology; Medical Genetics Institute; Cedars-Sinai Medical Centre; Los Angeles; USA
21. Institute of Biology and Medical Genetics; Charles University Prague 2; nd; Medical School; Prague; Czech Republic
22. Neurology Department; Hospital Sant Joan de Déu; Barcelona; Spain
23. Department of Genetics; Hospices Civils de Lyon; Bron; France