1. National Center for Register‐Based Research, School of Business and Social Sciences Aarhus University Aarhus Denmark
2. Department of Clinical Medicine Aarhus University Aarhus Denmark
3. Center for Integrated Register‐Based Research Aarhus University Aarhus Denmark
4. Department of Public Health University of Copenhagen Copenhagen Denmark
5. Department of Sociology University of Wisconsin–Madison Madison Wisconsin USA
6. Department of Biostatistics and Medical Informatics University of Wisconsin–Madison Madison Wisconsin USA
7. Department of Neurology Aarhus University Hospital Aarhus Denmark