[1] Univ Oklahoma, Hlth Sci Ctr, Coll Publ Hlth, Oklahoma City, OK 73104 USA
[2] Mahidol Univ, Ramathibodi Hosp, Fac Med, Bangkok 10400, Thailand
[3] Acad Nacl Med Buenos Aires, Div Hemostasia, Buenos Aires, DF, Argentina
[4] Acad Med Ctr, Dept Vasc Med, NL-1105 Amsterdam, Netherlands
[5] Flinders Med Ctr, SA Pathol, Dept Hematol, Bedford Pk, SA 5042, Australia
[6] NHS Fdn Trust, Thrombosis & Thrombophilia Ctr, London, England
[7] Boston Univ, Sch Med, Boston, MA 02118 USA
[8] Thrombosis Res Inst, London SW3 6LR, England
[9] Johannes Gutenberg Univ Mainz, Ctr Thrombosis & Hemostasis, D-55131 Mainz, Germany
[10] Univ Yamanashi, Dept Lab Med, Chuo Ku, Yamanashi 4093898, Japan
[11] McMaster Univ, Hamilton, ON L8L 2X2, Canada
[12] Thrombosis & Atherosclerosis Res Inst, Hamilton, ON L8L 2X2, Canada