[1] Geneva Univ Hosp, Div Angiol & Hemostasis, Geneva 14, Switzerland
[2] Fac Med, Geneva, Switzerland
[3] Amsterdam Med Ctr, Amsterdam, Netherlands
[4] Clin Univ St Luc, Brussels, Belgium
[5] Liege Univ Hosp, Liege, Belgium
[6] Geneva Univ Hosp, Emergency Dept, Geneva, Switzerland
[7] Ctr Hosp Univ Angers, Angers, France
[8] Hop Europeen Georges Pompidou, Paris, France
[9] Brest Univ Hosp, Brest, France
[10] Centre Hosp Agen, Agen, France
[11] Ctr Hosp Argenteuil, Argenteuil, France
[12] Ctr Hosp Univ Clermont Ferrand, Clermont Ferrand, France
[13] Ctr Hosp Morlaix, Morlaix, France
[14] Maasstad Hosp, Dept Internal Med, Rotterdam, Netherlands
[15] Almere Flevo Hosp, Almere, Netherlands
[16] Acad Med Ctr, Dept Vasc Med, Amsterdam, Netherlands
[17] Rijnstate Hosp, Arnhem, Netherlands
[18] Maastricht Univ, Maastricht, Netherlands
[19] Van Weel Bethesda Hosp, Dirksland, Netherlands
[20] Amphia Hosp, Breda, Netherlands
[21] Erasmus MC, Dept Hematol, Rotterdam, Netherlands
[22] Flevo Hosp, Almere, Netherlands
[23] Leiden Univ Med Ctr, Leiden, Netherlands
[24] Univ Med Ctr Groningen, Groningen, Netherlands
[25] Ottawa Hlth Res Inst, Ottawa, ON, Canada