1. Institute for Biomedical Ethics, University of Basel, Bernoullistr. 28, 4056 Basel, Switzerland
2. REHAB Basel, Basel, Switzerland; University Hospital of Basel, Basel, Switzerland
3. Clinical Ethics, University Hospital of Zürich, Zürich, Switzerland
4. Institute of Biomedical Ethics and History of Medicine, University of Zürich, Zürich, Switzerland
5. Institute for Biomedical Ethics, University of Basel, Basel, Switzerland