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 of Anaesthesiology and Intensive Care Medicine; Medical Faculty, RWTH Aachen University; Aachen Germany
3. Department of Infectious Diseases and Respiratory Medicine; Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin; Berlin Germany
4. Cochrane Metabolic and Endocrine Disorders Group; Institute of General Practice, Medical Faculty of the Heinrich-Heine-University Düsseldorf; Düsseldorf Germany
5. Department of Intensive Care Medicine; Medical Faculty, RWTH Aachen University; Aachen Germany
6. Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine; University Hospital Wuerzburg; Wuerzburg Germany
7. 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
8. 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