1. Department of Neurology, Siun Sote North Karelia Central Hospital, Joensuu, Finland
2. Clinical Neurosciences, University of Turku, Turku, Finland
3. Neurocenter, Turku University Hospital, Turku, Finland
4. Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
5. Heart Center, Siun Sote North Karelia Central Hospital, Joensuu, Finland
6. Department of radiology, Siun Sote North Karelia Central Hospital, Joensuu, Finland
7. Department of radiology, Turku University Hospital, Turku, Finland