1. Department of Pathology; Beth Israel Deaconess Medical Center and Harvard Medical School; Boston Massachusetts
2. Department of Clinical Pathology; Sunnybrook Health Sciences Centre; Department of Laboratory Medicine and Pathobiology; University of Toronto; Toronto Ontario Canada
3. Clinical Epidemiology Program; Ottawa Hospital Research Institute; Ottawa Ontario Canada
4. Department of Medicine; Ottawa Hospital and University of Ottawa; Ottawa Ontario Canada
5. Department of Hemotherapy and Hemostasis; University Clinic Hospital; Barcelona Spain
6. Institute of Clinical Hemostaseology and Transfusion Medicine; Saarland University Hospital; Homburg/Saar Germany
7. Center for Clinical Transfusion Research; Sanquin/LUMC; Leiden the Netherlands
8. American Society for Clinical Pathology (ASCP); Chicago Illinois