1. VU University Medical Center, Department of Public and Occupational Health, EMGO Institute, Amsterdam,
2. VU University Medical Center, Department of Public and Occupational Health, EMGO Institute, Amsterdam, Vrije Universiteit Brussel, End-of-Life Care Research Group, Brussels
3. VU University Medical Center, Department of Public and Occupational Health, EMGO Institute, Amsterdam
4. Netherlands Institute for Health Services Research (NIVEL), Utrecht, VU University Medical Center, Department of General Practice, EMGO Institute, Amsterdam
5. VU University Medical Center, Department of General Practice, EMGO Institute, Amsterdam
6. University of Maastricht, Department of Health Care Studies/Medical Sociology, Maastricht