1. Department of Neurology Odense University Hospital Odense Denmark
2. Department of Clinical Research Faculty of Health Sciences University of Southern Denmark Odense Denmark
3. Centro Español Investigatión Farmacoepidemiológica (CEIFE) Madrid Spain
4. Clinical Pharmacology and Pharmacy Department of Public Health University of Southern Denmark Odense Denmark
5. Department of Neurosurgery Odense University Hospital Odense Denmark