1. Department of Neurology, Philipps University Marburg, University Hospital Giessen and Marburg, Marburg, Germany
2. Department of Anaesthesiology and Intensive Care Medicine, Philipps University Marburg, University Hospital Giessen and Marburg, Marburg, Germany
3. Research Group Medical Ethics, Philipps University Marburg, Marburg, Germany
4. Department of Neurology, Hospital Agatharied, Agatharied, Germany
5. Institute of Palliative Care, Paracelsus Medical University, Salzburg, Austria
6. Centre for Mind, Brain and Behaviour, Philipps University Marburg, Marburg, Germany