1. Danish Dementia Research Centre, Section 8007 Department of Neurology RigshospitaletUniversity of Copenhagen CopenhagenDenmark
2. Department of Clinical Microbiology Rigshospitalet CopenhagenDenmark
3. Department of Clinical Medicine University of Copenhagen CopenhagenDenmark
4. National Centre for Register‐based Research Department of Economics and Business Economics Aarhus BSS Aarhus University AarhusDenmark