1. Department of General Practice Cancer Center Amsterdam and Amsterdam Public Health Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
2. Socio‐Medical Sciences Erasmus School of Health Policy and Management Rotterdam The Netherlands
3. Netherlands Institute for Health Services Research (Nivel) Utrecht The Netherlands
4. Department of General Practice, Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
5. Department of Gastroenterology and Hepatology Cancer Center Amsterdam Amsterdam UMC University of Amsterdam Amsterdam The Netherlands