1. Institute for Medical Ethics and History of Medicine, Ruhr-University Bochum, Malakowturm-Markstr. 258a, 44799 Bochum, Germany,
2. Institute for Medical Ethics and History of Medicine, Ruhr-University Bochum, Malakowturm-Markstr. 258a, 44799 Bochum, Germany
3. German Society for Palliative Medicine; University Witten/Herdecke, Witten, Rüsternallee 45, 14050 Berlin, Germany