1. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University
2. General Practice/GP specialty training, Amsterdam UMC
3. Department of Public Health and Primary Care, Leiden Universitair Medisch Centrum
4. Department of Family Medicine, CAPHRI Care and Public Health Research Institute, Maastricht University
5. Department of General Practice and Elderly Care Medicine, Academic Hospital Groningen
6. Department of Primary and Community Care, Radboudumc