1. University Center of Geriatric Medicine University Medical Center Groningen Groningen The Netherlands
2. Knowledge Institute of the Dutch Association of Medical Specialists Utrecht The Netherlands
3. Department of Biomedical Data Sciences Leiden University Medical Center Leiden The Netherlands
4. Department of Public Health and Primary Care Leiden University Medical Center Leiden The Netherlands
5. Department of Geriatric Internal Medicine Meander Medical Center Amersfoort The Netherlands
6. Department of Gerontology and Geriatrics University Medical Center Utrecht Utrecht The Netherlands
7. Department of Medical Oncology Leiden University Medical Center Leiden The Netherlands
8. Department of Gerontology and Geriatrics Leiden University Medical Center Leiden The Netherlands