1. Institute of Human Genetics and Institute of Genetics University of Cologne Cologne Germany
2. Center for Molecular Medicine Cologne University of Cologne Cologne Germany
3. Center for Rare Diseases Cologne University Hospital Cologne Cologne Germany
4. Department of Pediatric Neurology Dokuz Eylül University Izmir Turkey
5. Cologne Center for Genomics (CCG) University of Cologne Cologne Germany
6. Department of Neurology University Hospital Cologne Cologne Germany
7. Department of Neurology DKD HELIOS Kliniken Wiesbaden Germany
8. Department of Pediatric Neurology Marmara University Istanbul Turkey
9. Department of Pediatric Neurology Ege University Izmir Turkey
10. Department of Neurology, Ghaem Hospital, Medical School Mashhad University of Medical Sciences Mashhad Iran
11. Molecular and Clinical Sciences Institute St. George's University of London, Cranmer Terrace London UK