1. Neurology Department Neurometabolic Unit Institut de Recerca CIBERER and MetabERN Hospital Sant Joan de Déu Barcelona Spain
2. Department of Pediatrics Neurology Unit Consorci Sanitari de Terrasa Barcelona Spain
3. Unit of Inherited Metabolic Diseases and Neuropediatrics Department of Pediatrics Hospital Universitari Germans Trias i Pujol Barcelona Spain
4. Neurology Department Epilepsy Unit Institut de Recerca and EpiCare Hospital Sant Joan de Déu Barcelona Spain
5. Statistics Department Institut de Recerca Sant Joan de Déu Barcelona Spain
6. Department of Pediatrics Division of Biochemical Genetics University of British Columbia Vancouver BC Canada
7. Neurology Department Fetal, Neonatal Neurology and Early Epilepsy Unit Institut de Recerca Hospital Sant Joan de Déu Barcelona Spain
8. Department of Clinical Biochemistry IPR and CIBERER‐ISCIII Hospital Sant Joan de Déu Barcelona Barcelona Spain