1. Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
2. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
3. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
4. Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway
5. Department of Geriatric Medicine, Oslo Delirium Research Group, Oslo University Hospital, Oslo, Norway
6. Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway
7. Department of Neurodegenerative Disease, UCL Institute of Neurology, London, United Kingdom
8. UK Dementia Research Institute at UCL, London, United Kingdom