1. Department of SurgeryAlrijne Medical Center Leiderdorp The Netherlands
2. Trauma Research Unit Department of SurgeryErasmus MC, University Medical Center Rotterdam, P.O. Box 2040 3000 CA Rotterdam The Netherlands
3. Military Blood BankMinistry of Defense Utrecht The Netherlands
4. Department of SurgeryDefense Healthcare Organization, Ministry of Defense Utrecht The Netherlands
5. Department of SurgeryLeiden University Medical Center Leiden The Netherlands