1. Department of Radiology 766; Radboud University Medical Center; P.O. Box 9101, 6500 HB Nijmegen The Netherlands
2. Child Development and Exercise Center; Myoflammation Consortium; Wilhelmina Children's Hospital, University Medical Center Utrecht; Utrecht The Netherlands
3. Department of Rehabilitation; Radboud University Medical Center; Nijmegen The Netherlands
4. Department of Neurology and Clinical Neurophysiology; Donders Centre for Neuroscience; Radboud University Medical Center; Nijmegen The Netherlands