1. Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, the Netherlands
2. University Network for the Care sector Zuid-Holland, Leiden University Medical Center, Leiden, the Netherlands
3. Department of Public and Occupational Health, Amsterdam University Medical Centers, Location VU University Medical Center, Amsterdam, the Netherlands
4. Netherlands Institute for Health Services Research (NIVEL), Utrecht, the Netherlands
5. Department of General Practice and Elderly Care Medicine, Amsterdam University Medical Centers, Location VU University Medical Center, Amsterdam, the Netherlands
6. Department of Primary and Community Care, Radboud University Medical Center, Nijmegen, the Netherlands