| Affiliation: | 1. Department of Paediatrics and Metabolic Center, University Hospitals Leuven, Leuven, Belgium;2. Correspondence to:;3. Peter Witters, M.D., Ph.D., Department of Paediatrics and Metabolic Center University Hospitals Leuven, Herestraat 49, Leuven B3000, Belgium.;4. E‐mail:;5. Department of Pediatric Neurology and Metabolic Center, UZ Brussel, Brussels, Belgium;6. Department of Pediatrics and Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands |
