1. Department of Orthopaedics, Institute of Clinical Sciences the Sahlgrenska Academy at the University of Gothenburg Gothenburg Sweden
2. Sahlgrenska University Hospital Mölndal Sweden
3. Institute of Neuroscience and Physiology, Department of Neurochemistry the Sahlgrenska Academy at the University of Gothenburg Gothenburg Sweden
4. Clinical Neurochemistry Laboratory Sahlgrenska University Hospital Mölndal Sweden
5. Department of Molecular Neuroscience, UCL Institute of Neurology Queen Square London UK
6. Hallands Sjukhus Kungsbacka Sweden