1. Department of Internal Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, Geriatrics section, Amsterdam, The Netherlands
2. Department of Neurology, Amsterdam UMC location Vrije Universiteit Amsterdam, Alzheimer Center Amsterdam, Amsterdam, The Netherlands
3. Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway
4. Department of Medicine, Division of Geriatric Medicine and Gerontology, Johns Hopkins School of Medicine, Baltimore, MD, USA
5. Department of Internal and Geriatric Medicine, University Medical Center Utrecht, Utrecht, The Netherlands