1. Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, and Laboratory for Clinical and Experimental Immunology, University of Amsterdam, and
2. Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Department of Blood Coagulation, Amsterdam;
3. Centre for Haemostasis, Thrombosis, Atherosclerosis, and Inflammation Research, Academic Medical Centre, and Slotervaart Ziekenhuis, Department of Internal Medicine, Amsterdam; and
4. Department of Internal Medicine, Free University Hospital, Amsterdam, The Netherlands