1. Center for Palliative Medicine; University Hospital of Cologne; Köln Germany
2. Center for Integrated Oncology; (CIO); Köln/Bonn Germany
3. Department of Palliative Medicine; University Hospital Bonn; Bonn Germany
4. Palliative Care Center; Malteser Hospital Seliger Gerhard Bonn/Rhein-Sieg; Bonn Germany
5. Departmentof Palliative Medicine; University Hospital; Göttingen Germany
6. Division of Palliative Medicine & Comprehensive Cancer Center, CCC Erlangen-EMN; University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg; Erlangen Germany
7. Clinical Trials Center Cologne; (ZKS); Köln Germany