1. Department of Clinical Chemistry; Metabolic Unit; VU University Medical Center; Amsterdam Neuroscience; Amsterdam The Netherlands
2. Edmond and Lily Safra Children's Hospital; Sheba Medical Center and Sackler School of Medicine; Tel Aviv University; Israel
3. Department of Pediatrics; University Hospital Center Zagreb & University of Zagreb, School of Medicine; Zagreb Croatia
4. Department of Pediatrics; Admiraal De Ruyter Ziekenhuis; Goes Zeeland The Netherlands
5. Neurology Department; CIBERER ISCIII; Hospital Sant Joan de Deu; University of Barcelona; Barcelona Spain
6. Department of pediatrics, metabolic diseases; Radboud University Medical Center; Nijmegen The Netherlands
7. Kariminejad-Najmabadi Pathology & Genetics Center; Tehran Iran
8. Medical Genetics Department; Koç University School of Medicine (KUSOM); Istanbul Turkey
9. Département de Neuropédiatrie; Hopital Gui de Chauliac; Montpellier Languedoc-Roussillon France
10. INSERM U1051; Institut des Neurosciences de Montpellier; Montpellier France
11. Beatrix Children's Hospital, University Medical Center Groningen; University of Groningen; Groningen The Netherlands
12. Centre de Biologie et de Pathologie Est CHU de Lyon; Service Maladies Héréditaires du Métabolisme et Dépistage Néonatal; Lyon France