1. Department of Family Medicine and Chronic Care, Vrije Universiteit Brussel, Brussels, Belgium
2. End-of-Life Care Research Group, Vrije Universiteit Brussel and Ghent University, Brussels and Ghent, Belgium
3. Department of Public Health and Primary Health Care, Ghent University, Ghent, Belgium
4. Department of Education, University of Utrecht, Utrecht, The Netherlands
5. Department of Family Medicine and Chronic Care, Vrije Universiteit Brussel [VUB], Brussels, Belgium