1. Department of Neuropediatrics, University Children's Hospital, Ruhr University, Bochum, Germany
2. Department of Neurology, University Hospital Bergmannsheil, Ruhr University, Bochum, Germany
3. Department of Human Genetics, Ruhr University, Bochum, Germany
4. Department of Pediatric Pneumology and Immunology, University Children's Hospital, Ruhr University, Bochum, Germany
5. Nijmegen Centre for Mitochondrial Disorders (NCMD) at the Department of Pediatrics and the Institute for Genetic and Metabolic Disease (IGMD), Radboud University Medical Centre, Nijmegen, The Netherlands
6. Institute of Diagnostic Radiology, Interventional Radiology and Nuclear Medicine, University Hospital Bergmannsheil, Ruhr University, Bochum, Germany
7. Laboratory for Molecular Genetics and Metabolic Diseases, Munich, Germany