[1] Univ Hosp Carl Gustav Carus Dresden, Div Hematol, Dept Med 1, Thrombosis Res Unit, Fetscherstr 74, D-01307 Dresden, Germany
[2] Kings Coll London, Dept Hematol, Kings Thrombosis Serv, London, England
[3] Dresden Friedrichstadt Hosp, Med Dept 2, Dresden, Germany
[4] Gen Med Ctr, Phlebol Unit, Mannheim, Germany
[5] Bonn Univ Hosp, Dept Dermatol, Bonn, Germany
[6] McMaster Univ, Hamilton, ON, Canada
[7] Thrombosis & Atherosclerosis Res Inst, Hamilton, ON, Canada
[8] GWT TUD GmbH, Dresden, Germany
[9] ClinStat GmbH, Inst Clin Res & Stat, Cologne, Germany
[10] Darmstadt Municipal Hosp, Dept Vasc Med, Darmstadt, Germany
[11] Johannes Gutenberg Univ Mainz, Ctr Thrombosis & Haemostasis, Mainz, Germany