1. Department of Neurology Danish Dementia Research Centre Rigshospitalet Copenhagen Ø Denmark
2. Department of Clinical Medicine University of Copenhagen Copenhagen Ø Denmark
3. Dementia Centre for Research Collaboration School of Psychiatry University of New South Wales Sydney NSW Australia
4. Centre for Healthy Brain Ageing School of Psychiatry University of New South Wales Sydney NSW Australia
5. Department of Economics and Business Economics National Centre for Register‐based Research Aarhus University Aarhus Denmark