1. Department of Vascular MedicineAcademic Medical Center, University of Amsterdam Amsterdam The Netherlands
2. Department of Laboratory MedicineAcademic Medical Center, University of Amsterdam Amsterdam The Netherlands
3. Department of Internal MedicineAcademic Medical Center, University of Amsterdam Amsterdam The Netherlands
4. Metabolic Unit, Department of Clinical ChemistryVU University Medical Center, Neuroscience Amsterdam Amsterdam The Netherlands
5. Department of Social MedicineAcademic Medical Center, University of Amsterdam Amsterdam The Netherlands
6. Department of NeurologyCincinnati Children's Hospital Cincinnati Ohio USA