1. Division of Child Neurology University Children's Hospital Zurich Zurich Switzerland
2. CRC Clinical Research Center University Children's Hospital Zurich Zurich Switzerland
3. Radiz—Rare Disease Intiative Zurich, Clinical Research Priority Program for Rare Diseases University of Zurich Zurich Switzerland
4. Department of Clinical Chemistry and Biochemistry University Children's Hospital Zurich Zurich Switzerland
5. Department of Pediatrics and Adolescent Medicine, Division of General Pediatrics Medical University of Graz Graz Austria
6. Molecular Neurosciences, Developmental Neuroscience UCL Institute of Child Health London UK
7. Department of Pediatric Kidney, Liver and Metabolic Diseases Hannover Medical School Hannover Germany
8. Pediatric Emergency Department University Children's Hospital Zurich Zurich Switzerland
9. University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern Bern Switzerland