Is contrast venography a valid surrogate outcome measure in venous thromboembolism prevention studies

1*Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam and Department of Clinical Epidemiologyand Medical Technology Assessment, Academic Hospital University of Maastricht, Maastricht, The NetherlandsTo cite this article: Segers AEM, Prins MH, Lensing AWA, Buller HR. Is contrast venography a valid surrogate outcome measure in venousthromboembolism prevention studies? J Thromb Haemost 2005; 3: 1099–1102.