[1] Blood Ctr SE Wisconsin Inc, Blood Res Inst, Milwaukee, WI 53201 USA
[2] St George Hosp, Dept Med, Kogarah, NSW, Australia
[3] McMaster Univ, Dept Med & Mol Pathol, Hamilton, ON, Canada
[4] Univ Greifswald, Dept Immunol & Transfus Med, Greifswald, Germany
[5] Royal Prince Alfred Hosp, Haemophilia & Thrombosis Unit, Sydney, NSW, Australia
[6] Med Coll Wisconsin, Dept Med, Milwaukee, WI 53226 USA