1. End-of-Life Care Research Group; Vrije Universiteit Brussel and Ghent University; Brussels Belgium
2. General Practice and Elderly Care Medicine; EMGO Institute for Health and Care Research; Expertise Center for Palliative Care; VU University Medical Center; Amsterdam the Netherlands
3. Heymans Institute of Pharmacology; Ghent University; Ghent Belgium
4. Public and Occupational Health; EMGO Institute for Health and Care Research; Expertise Center for Palliative Care; VU University Medical Center; Amsterdam the Netherlands
5. Department of Family Medicine; Vrije Universiteit Brussel; Brussels Belgium