1 Thrombosis Research Unit, Department of Medicine I, Division Hematology, University Hospital "Carl Gustav Carus" Dresden, Fetscherstrasse 74; D-01307 Dresden, Germany; Kings Thrombosis Service, Department of Hematology, Kings College London, London, UK. Electronic address: jan.beyer@uniklinikum-dresden.de.
2 Medical Department II, Dresden Friedrichstadt Hospital, Dresden, Germany.
3 Phlebology Unit, General Medical Centre, Mannheim, Germany.
4 Dermatology Department, Bonn University Hospital, Bonn, Germany.
5 McMaster University and the Thrombosis & Atherosclerosis Research Institute, Hamilton, Ontario, Canada.
6 GWT-TUD GmbH, Dresden, Germany.
7 ClinStat GmbH, Institute for Clinical Research and Statistics, Cologne, Germany.
8 Department of Vascular Medicine, Darmstadt Municipal Hospital, Darmstadt, Germany; Center of Thrombosis and Haemostasis, University of Mainz, Mainz, Germany.