1. Copenhagen Neuromuscular Center Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
2. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
3. The Department of Neurology, Donders Institute for Brain, Cognition and Behaviour Radboud University Nijmegen Medical Centre Nijmegen The Netherlands
4. Clinical Metabolomics Core Facility, Clinical Biochemistry Copenhagen University Hospital Copenhagen Denmark
5. Department of Biomedical Sciences, Faculty of Health & Medical Sciences University of Copenhagen Copenhagen Denmark