1. Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen Friedrich‐Alexander‐University (FAU) Erlangen‐Nürnberg Erlangen Germany
2. Pediatric Experimental and Translational Imaging Laboratory (PETI‐Lab), University Hospital Erlangen Friedrich‐Alexander‐University (FAU) Erlangen‐Nürnberg Erlangen Germany
3. Medical Department 1, University Hospital Erlangen Friedrich‐Alexander‐University (FAU) Erlangen‐Nürnberg Erlangen Germany
4. German Center Immunotherapy, University Hospital Erlangen Friedrich‐Alexander‐University (FAU) Erlangen‐Nürnberg Erlangen Germany
5. Department of Pediatric Neurology, Developmental Neurology and Social Pediatrics University of Duisburg‐Essen Essen Germany
6. Children's Hospital of Eastern Ontario Research Institute; Division of Neurology, Department of Medicine, The Ottawa Hospital; and Brain and Mind Research Institute University of Ottawa Ottawa Canada
7. Department of Neurology, Heimer Institute for Muscle Research, University Hospital Bergmannsheil Ruhr‐University Bochum Bochum Germany
8. Center for Chronically Sick Children Charité‐Universitätsmedizin Berlin Berlin Germany