1. Dept of Internal Medicine, Oslo University Hospital, Oslo, Norway
2. Dept of Neuroscience, CRCHUM, University of Montreal, Quebec, Canada
3. Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
4. Medical Sciences Division, University of Oxford, Oxford, UK
5. Dept of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
6. Dept of Neurology and Rehabilitation, Skåne University Hospital and Lund University, Malmö, Sweden
7. Dept of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
8. University of Copenhagen, Copenhagen, Denmark
9. Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK