1. Department of Pediatrics, Division of Metabolic Diseases and Genetics, Erasmus MC-Sophia, Rotterdam, Rotterdam, The Netherlands
2. Department of Clinical Genetics, Erasmus MC, Rotterdam, Rotterdam, The Netherlands
3. Department of Pediatric Neurology, Erasmus MC-Sophia, Rotterdam, Rotterdam, The Netherlands
4. Hospital Pharmacy, Erasmus MC, Rotterdam, Rotterdam, The Netherlands
5. Division of Pediatric Cardiology, Erasmus MC-Sophia, Rotterdam, Rotterdam, The Netherlands
6. Division of Neonatology, Erasmus MC-Sophia, Rotterdam, Rotterdam, The Netherlands
7. Department of Epidemiology and Biostatistics, Erasmus MC, Rotterdam, Rotterdam, The Netherlands
8. Department of Neurology, Erasmus MC, Rotterdam, Rotterdam, The Netherlands
9. Division of Pediatric Intensive Care, Erasmus MC-Sophia, Rotterdam, Rotterdam, The Netherlands
10. Department of Pediatrics, Erasmus MC-Sophia, Rotterdam, Rotterdam, The Netherlands
11. Pharming-Genzyme LLC, Leiden, The Netherlands
12. Department of Pediatrics, University Hospital Gasthuisberg, Leuven, Belgium
13. Department of Pediatrics, Division of Metabolic Diseases, University Medical Center Nijmegen, Nijmegen, The Netherlands
14. Department of Internal Medicine, Erasmus MC, Rotterdam, Rotterdam, The Netherlands