1. Department of Palliative Care, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
2. Haus Katharina Egg, nursing home, Heiliggeistspitalstiftung Freiburg, Stiftungsverwaltung Freiburg, Germany
3. Department of General Practice and Primary Care, University Medical Center Hamburg-Eppendorf, Germany