1. Sarcoma Unit, Mannheim Cancer Center (MCC), Mannheim University Medical Center, University of Heidelberg, 68167 Mannheim, Germany
2. Department of Oncology and Palliative Care, HELIOS Klinikum Bad Saarow, 15526 Bad Saarow, Germany
3. Department of Internal Medicine C, University Medicine Greifswald, 17475 Greifswald, Germany
4. Department of Medical Oncology and Hematology, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland
5. Medical Department I, University Hospital Carl Gustav Carus, Dresden University of Technology, 01307 Dresden, Germany
6. Department of Hematology and Oncology, Paracelsus Medical University, 90419 Nuremberg, Germany
7. Department of Medical Oncology, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
8. Department of Hematology, Oncology and Palliative Medicine, Vivantes Klinikum Spandau, 13585 Berlin, Germany
9. Clinical Division of Oncology, Department of Internal Medicine, Medical University Graz, 8036 Graz, Austria
10. Clinic for Internal Medicine III, University Hospital Ulm, 89081 Ulm, Germany
11. Vienna General Hospital (AKH), Medizinische Universität Wien, 1090 Vienna, Austria
12. Department of Internal Medicine V, Heidelberg University Hospital, 69120 Heidelberg, Germany
13. Department of Oncology, Helios Klinikum Berlin-Buch, 13125 Berlin, Germany
14. Division of Surgical Oncology and Thoracic Surgery, University Medical Center Mannheim, Mannheim Medical Faculty, University of Heidelberg, 68167 Mannheim, Germany
15. Onkologischer Schwerpunkt am Oskar-Helene Heim, 14195 Berlin, Germany