1. Department of Public and Occupational Health, EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands.
2. Expertise Center for Palliative Care, VU University Medical Center, Amsterdam, the Netherlands.
3. Department of Epidemiology and Biostatistics, EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands.
4. End-of-Life Care Research Group, Ghent University and Vrije Universiteit Brussel, Brussels, Belgium.