1. Koen Pardon, Kenneth Chambaere, Reginald Deschepper, Judith Rietjens, Luc Deliens, End-of-Life Care Research Group, Ghent University and Vrije Universiteit (VU) Brussels, Brussels; H. Roeline W. Pasman, Luc Deliens, EMGO Institute for Health and Care Research, Expertise Center for Palliative Care, VU University Medical Center, Amsterdam, the Netherlands.