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 de Investigación Farmacoepidemiológica (CEIFE); Madrid Spain
4. Department of Clinical Pharmacology; Odense University Hospital; Odense Denmark
5. Institute of Public Health; University of Southern Denmark; Odense Denmark