1. Cochrane Haematology, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany
2. University of Cologne; Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Cochrane Haematological Malignancies; Cologne Germany
3. Institute of Medical Statistics and Computational Biology; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany
4. Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Department of Urology; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany
5. Cochrane Cancer, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany