1. Sunnaas Rehabilitation HospitalTRS National Resource Centre for Rare Disorders Nesoddtangen Norway
2. Faculty of Medicine, Institute of Clinical MedicineUniversity of Oslo Oslo Norway
3. Department of ResearchSunnaas Rehabilitation Hospital Nesoddtangen Norway
4. Department of Cognitive RehabilitationSunnaas Rehabilitation Hospital Nesoddtangen Norway
5. Victorian Clinical Genetics ServiceMurdoch Childrens Research Institute and University of Melbourne Melbourne Victoria Australia