1. Department of Economics and Business Economics National Center for Register‐Based Research Aarhus University Aarhus Denmark
2. Department of Neurology Aarhus University Hospital Aarhus Denmark
3. Center for Integrated Register‐Based Research Aarhus University Aarhus Denmark
4. Department of Clinical Medicine University of Bergen Bergen Norway
5. Department of Neurology Haukeland University Hospital Bergen Norway
6. Department of Clinical Neuroscience Karolinska Institute Stockholm Sweden
7. Department of Neurology Karolinska University Hospital Stockholm Sweden