[1] University Hospital Jena,Department of Palliative Care
[2] Friedrich-Schiller University,First Department of Internal Medicine, Center for Integrated Oncology Aachen Bonn Dusseldorf Cologne
[3] Department of Palliative Medicine,undefined
[4] Faculty of Medicine and Cologne University Hospital,undefined
[5] Center for Integrated Oncology Aachen Bonn Dusseldorf Cologne,undefined
[6] Comprehensive Cancer Center Central Germany (CCCG),undefined
[7] University of Cologne,undefined