1 3rd Department of Medicine (Hematology and Oncology), Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
2 Department of Hematology, Oncology and Palliative Care, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany.
3 Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Hematology, Oncology and Cancer Immunology (CVK/CCM), Berlin, Germany.
4 Clinic for Internal Medicine IV (Gastroenterology, Infectious Disease and Poisoning), University Hospital Heidelberg, Heidelberg, Germany.
5 Department of Medical Oncology, University Hospital Essen, Essen, Germany.
6 Clinic for Internal Medicine II, University Hospital Würzburg, Würzburg, Germany.
7 Department of Internal Medicine, Oncology, Hematology, Gastroenterology and Infectious Diseases, Klinikum Esslingen, Esslingen, Germany.
8 University Hospital of Mannheim, Mannheim, Germany.
9 The Frankfurt Institute of Clinical Cancer Research, Frankfurt, Germany.