1. Department of Clinical Neuroscience Karolinska Institutet Stockholm Sweden
2. Center for Neurology Academic Specialist Center Stockholm Sweden
3. Department of Neurology University Hospital Marburg Marburg Germany
4. Department of Human Pathophysiology Institute of Medical Sciences, University of Rzeszów Rzeszów Poland
5. Department of Clinical Science and Education, Division of Internal Medicine, Södersjukhuset Karolinska Institutet Stockholm Sweden
6. Department of Medicine Sunderby Hospital Luleå Sweden
7. Department of Neurology Karolinska University Hospital Stockholm Sweden