1. Institute of Medical Genetics, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK
2. Department of Clinical Genetics, Erasmus Medical Center, Rotterdam, Netherlands
3. Center for Biomics and Department of Cell Biology, Erasmus Medical Center, Rotterdam, Netherlands
4. The Wales Gene Park, Division of Cancer and Genetics, Cardiff University, School of Medicine, Cardiff, UK
5. Medical Genetics, ASST Santi Paolo e Carlo, Ospedale San Paolo, Milan, Italy
6. Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah, USA
7. Center for Human Genetics, Cliniques Universitaires Saint–Luc, UC Louvain, Brussels, Belgium
8. Department of Pediatrics and Child Neurology, University Hospital Leuven, Leuven, Belgium
9. Department of Pediatrics, Pediatric Neurology Unit, UZ Brussel, Brussels, Belgium
10. Department of Translational Neurosciences, University of Antwerp, Antwerp, Belgium
11. Department of Clinical Genetics, University Medical Center Utrecht, Utrecht, Netherlands
12. Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth Houston) and Children’s Memorial Hermann Hospital, Houston, Texas, USA
13. Institute of Life Science 1, Swansea University Medical School, Swansea, UK