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

Authors


A. E. M. Segers, Department of Vascular Medicine, Academic Medical Center, F4-276, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
Tel.: +31 20 5665976; fax: +31 20 6968833; e-mail: a.e.segers@amc.uva.nl

Ancillary