1. Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Cochrane Haematological Malignancies; University of Cologne; Kerpener Str. 62 Cologne Germany 50937
2. NHS Blood and Transplant; Haematology/Transfusion Medicine; Level 2, John Radcliffe Hospital Headington Oxford UK OX3 9BQ
3. University of Oxford; Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences; Windmill Road Oxford UK OX3 7LD
4. University Medical Center Utrecht, Utrecht University; Julius Center for Health Sciences and Primary Care; PO Box 85500 Utrecht Netherlands 3508 GA
5. Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf; University of Cologne; Kerpener Str. 62 Cologne Germany 50924
6. Faculty of Medicine and University Hospital Cologne, Department for Nuclear Medicine; University of Cologne; Cologne Germany
7. McMaster University; Department of Health Research Methods, Evidence, and Impact; 1280 Main St W Hamilton Ontario Canada L8S 4L8
8. Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Cochrane Cancer; University of Cologne; Kerpener Str. 62 Cologne Germany 50937