1. Surgical Research Laboratory, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands;
2. Division of Internal Medicine, Department of Clinical Sciences and
3. Clinical Chemistry and Blood Coagulation Research, Department of Molecular Medicine and Surgery (MMK), and
4. Division of Paediatrics, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden;
5. Department of Hematology, Karolinska University Hospital, Stockholm, Sweden; and
6. UNC Blood Research Center, Division of Hematology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC