1. Department of Developmental Neurology, Medical University of Gdańsk, Gdańsk, Poland
2. Department of Pediatric Neurology, Vall d’Hebron University Hospital, Barcelona, Spain
3. Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
4. Department of Pediatrics, Center for Lysosomal and Metabolic Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
5. Institute for Mother and Child Healthcare of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
6. Department of Pediatrics and Adolescent Medicine, University Medical Center, Göttingen, Germany
7. Department of Pediatric and Adolescent Medicine, Centre for Rare Diseases, Aarhus University Hospital, Aarhus, Denmark
8. Faculty of Medicine, Clinical Hospital Centre Rijeka, University of Rijeka, Rijeka, Croatia
9. Pediatric Neurology and Muscular Diseases Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy
10. Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Genova, Italy
11. Pediatric Neurology Department, Rare Epilepsy Center, Université de Paris, Robert Debré University Hospital, Paris, France