1. Dept. of Geriatric Medicine, Gelre Ziekenhuizen, Apeldoorn & Zutphen Zutphen The Netherlands
2. Centre of Excellence for Old Age Medicine, Gelre ziekenhuizen, Apeldoorn & Zutphen Zutphen The Netherlands
3. Dept. of Urology Radboud University Medical Centre Nijmegen The Netherlands
4. Department of Internal Medicine and Geriatrics, Groningen University of Groningen, University Medical Centre Groningen Groningen The Netherlands
5. Dept. of Geriatric Medicine Radboud University Medical Centre Nijmegen The Netherlands
6. Donders Institute for Brain, Cognition and Behaviour Nijmegen The Netherlands