1. Department of Internal Medicine; Geriatrics Section; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
2. Department of Geriatrics; Gelre Hospitals; Apeldoorn The Netherlands
3. Department of Internal Medicine; University Center of Geriatric Medicine; University Medical Center Groningen; Groningen The Netherlands
4. Department of Geriatrics; Tergooi Hospitals; Hilversum The Netherlands
5. Department of Medical Informatics; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands