1. Department of Clinical Neuroscience and Rehabilitation, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2. Department of Neurology, Örebro University Hospital, Örebro, Sweden
3. School of Health and Medical Sciences, Örebro University, Örebro, Sweden
4. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
5. UCL Institute of Neurology, Queen Square, London, UK
6. Department of Pharmacology and Clinical Neuroscience, Umeå University, Umeå, Sweden