1. Department of Intensive Care Medicine; Amsterdam UMC; Academic Medical Center; Amsterdam the Netherlands
2. Trauma Unit; Department of Surgery; Academic Medical Center; Amsterdam the Netherlands
3. Department of Traumatology; Oslo University Hospital; Oslo Norway
4. Department of Anesthesiology; Oslo University Hospital; Oslo Norway
5. NHS Blood and Transplant/Oxford University Hospitals NHS Trust; John Radcliffe Hospital; Oxford UK
6. Radcliffe Department of Medicine; University of Oxford; Oxford UK
7. Department of Anesthesiology and Trauma Center; Center for Head and Orthopedics, and Section for Transfusion Medicine; Capital Region Blood Bank; Copenhagen University Hospital Rigshospitalet; Copenhagen Denmark
8. Department for Traumatology and Orthopedic Surgery; Cologne-Merheim Medical Center; University of Witten/Herdecke; Cologne Germany
9. Trauma Sciences; Blizard Institute; Barts and the London School of Medicine and Dentistry; Queen Mary University of London; London UK