1. Department II of Internal Medicine, Hematology/Oncology, Goethe University Frankfurt , Frankfurt am Main , Germany
2. German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz and German Cancer Research Center (DKFZ) , Heidelberg , Germany
3. Institute of Clinical Epidemiology and Biometry, University of Würzburg , Würzburg , Germany
4. University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Cologne, Germany, University of Cologne
5. University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine , Cologne , Germany
6. German Centre for Infection Research (DZIF), partner site Bonn-Cologne , Cologne , Germany