1. Pediatric Neurology Research Group Hospital Vall d'Hebron and Research Institute (VHIR) Barcelona Spain
2. Department of Clinical Biochemistry Hospital Sant Joan de Déu Barcelona Barcelona Spain
3. Universitat de Barcelona Barcelona Spain
4. Department of Child Neurology Hospital Sant Joan de Déu Barcelona Barcelona Spain
5. Centre for Biochemical Research in Rare Diseases (CIBERER) Valencia Spain