1. Division of Applied Mathematics; Brown University; Providence RI USA
2. Division of Hematology and Thromboembolism; Department of Medicine; McMaster University; Hamilton ON Canada
3. Department of Medicine; General Internal Medicine; University of British Columbia; Vancouver BC Canada
4. Department of Medicine; University of Washington; Seattle WA USA
5. Departments of Physiology, Physics, and Mathematics; McGill University; Montreal QC Canada