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. Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Stem Cell Transplantation Program; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany
3. Haematology/Transfusion Medicine; NHS Blood and Transplant; Oxford UK
4. Department of Haematology & Immunology; University of Nigeria; Enugu Nigeria
5. Department of Medicine III; University Hospital LMU, Ludwig-Maximilians-Universität München; Munich Germany
6. Institute of Medical Statistics and Computational Biology; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany
7. Institute of Health Economics and Clinical Epidemiology; University of Cologne, Faculty of Medicine and University Hospital Cologne; Cologne Germany
8. 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