1. Centre for Age‐Related Medicine Stavanger University Hospital Stavanger Norway
2. Clinical Institute 1, Faculty of Medicine University of Bergen Bergen Norway
3. Oslo Delirium Research Group, Department of Geriatric Medicine Oslo University Hospital Oslo Norway
4. Department of Medicine and Aging Sciences University G. d'Annunzio of Chieti‐Pescara Chieti Italy
5. Department of Old Age Psychiatry King's College London, Institute of Psychiatry, Psychology and Neuroscience London UK