[1] Univ Ottawa, Dept Med, Div Hematol, Thrombosis Program, Ottawa, ON, Canada
[2] Cleveland Clin, Dept Solid Tumor Oncol, Taussig Canc Inst, Cleveland, OH 44106 USA
[3] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Div Hemostasis & Thrombosis, Boston, MA 02215 USA
[4] Royal Gwent Hosp, Newport, Gwent, Wales
[5] Univ British Columbia, Div Hematol, Dept Med, Vancouver, BC V5Z 1M9, Canada