1. Consultant for Anesthesiology, Intensive Care, Pain Therapy and Palliative Care, Centre for Palliative Medicine Malteser Krankenhaus, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
2. Centre for Palliative Medicine Malteser Krankenhaus, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
3. Oxford International Centre for Palliative Care, Health Sciences and Systems, Oxford, UK