1. Department of Pediatrics, Academic Medical Center, Amsterdam, The Netherlands;
2. Department of Rehabilitation, Academic Medical Center, Amsterdam, The Netherlands;
3. Section of Metabolic Diseases, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands;
4. Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands;
5. Department of Internal Medicine, Division of Endocrinology and Metabolism, Academic Medical Center, Amsterdam, The Netherlands;
6. Department of Pediatrics, Radboud University Medical Center, Nijmegen, The Netherlands