1. Department of Public and Occupational Health, Amsterdam UMC Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute Amsterdam The Netherlands
2. Dutch Federation of Cancer Patients Organizations (Nederlandse Federatie van Kankerpatiëntenorganisaties, NFK) Utrecht The Netherlands
3. Dutch Breast Cancer Organization (Borstkankervereniging Nederland, BVN) Utrecht The Netherlands
4. Department of Human Resources Radboud university medical center Nijmegen The Netherlands
5. Netherlands Comprehensive Cancer Organization (Integraal Kankercentrum Nederland, IKNL) Utrecht The Netherlands