1. Department of Neurology, Helsinki University Hospital, Helsinki, Finland
2. University of Helsinki, Helsinki, Finland
3. HUS Diagnostic Center, Helsinki University Hospital, Helsinki, Finland
4. Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland
5. Tampere University, Tampere, Finland
6. Department of Neuroscience and Rehabilitation, Tampere University Hospital, Tampere, Finland
7. Tays Heart Hospital, Tampere University Hospital, Tampere, Finland
8. Neurocenter, Turku University Hospital, Turku, Finland
9. University of Turku, Turku, Finland
10. Heart Centre, Turku University Hospital, Turku, Finland
11. Department of Neurology, Kuopio University Hospital, Kuopio, Finland
12. University of Eastern Finland, Kuopio, Finland
13. Heart Center, Kuopio University Hospital, Kuopio, Finland
14. Department of Neurology, Oulu University Hospital, Oulu, Finland