1 Department of Palliative Medicine, University Hospital Bonn, Bonn, Germany Centre of Palliative Care, Malteser Hospital Seliger Gerhard Bonn/Rhein-Sieg, Bonn, Germany Lukas.radbruch@malteser.org.
2 University of Humanistic Studies, Utrecht, The Netherlands.
3 Federation Palliative Care Flanders, Vilvoorde, Belgium.