1. First Department of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf University of Cologne Cologne Germany
2. Mildred Scheel School of Oncology Aachen Bonn Cologne Dusseldorf (MSSO ABCD) Faculty of Medicine and University Hospital Cologne Cologne Germany
3. Department of Palliative Care University Hospital Jena Jena Germany
4. Department of Internal Medicine II University Hospital Jena Jena Germany
5. Department of Palliative Medicine, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf Faculty of Medicine and University Hospital Cologne Cologne Germany