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. Transfusion Research Unit, School of Public Health and Preventive Medicine; Monash University; Melbourne Australia
3. Haematology/Transfusion Medicine; NHS Blood and Transplant; Oxford UK
4. Laboratory of Experimental Immunology, Institute of Virology; Faculty of Medicine and University Hospital Cologne, University of Cologne; Cologne Germany
5. Erasmus Medical Centre; Rotterdam Netherlands
6. School of Medicine; Technical University of Munich; Munich Germany
7. Department I for Internal Medicine, Division of Infectious Diseases; University of Cologne, Faculty of Medicine and University Hospital Cologne; Cologne Germany
8. Center for Molecular Medicine Cologne (CMMC); Faculty of Medicine, University of Cologne; Cologne Germany
9. Department of Infectious Diseases and Respiratory Medicine; Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin; Berlin Germany