1. Department of Pediatrics Radboud University Medical Center Nijmegen The Netherlands
2. Radboud Institute for Molecular Life Sciences Radboud University Medical Center Nijmegen The Netherlands
3. Amalia Children's Hospital Radboud University Medical Center Nijmegen The Netherlands
4. Department of Pediatrics and Human Genetics, Emma Center for Personalized Medicine Amsterdam University Medical Centers Amsterdam The Netherlands
5. Division of Child Neurology and Metabolic Medicine, Centre for Child and Adolescent Medicine University Hospital Heidelberg Heidelberg Germany
6. Division of Pediatric Epileptology, Center for Child and Adolescent Medicine University Hospital Heidelberg Heidelberg Germany
7. Section of Inborn Errors of Metabolism‐IBC, Department of Biochemistry and Molecular Genetics, Hospital Clinic de Barcelona IDIBAPS‐CIBERER Barcelona Spain
8. Genetics Department 12 de Octubre University Hospital Madrid Spain
9. Paediatric Neuropsychology Department 12 de Octubre University Hospital Madrid Spain
10. United for Metabolic Diseases The Netherlands
11. Amsterdam Gastroenterology Endocrinology Metabolism Amsterdam University Medical Centers Amsterdam The Netherlands
12. Department of Human Genetics Radboud University Medical Center Nijmegen The Netherlands