1. Institute of Clinical Medicine – Neurology, University of Eastern Finland, Kuopio, Finland
2. Neuro Center, Neurology, Kuopio University Hospital, Kuopio, Finland
3. A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
4. Medical Research Center, Oulu University Hospital, Oulu, Finland
5. Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland
6. Neuro Center, Neurosurgery, Kuopio University Hospital, Kuopio, Finland