THROMBOSIS AND HEMOSTASIS Factors that predict thrombosis in relatives of patients with venous thromboembolism

Groupe d’Etude de la Thrombose de Bretagne Occidentale, Equipe d’Accueil 3878, Department of Internal Medicine and Chest Diseases, and Centre d’Investigation Clinique INSERM 0502, Groupe d’Investigation et de Recherche Clinique, Brittany University of Brest, Brest, France; McMaster University and the Thrombosis and Atherosclerosis Research Institute, Hamilton, ON, Canada; McGill University, Montreal, QC, Canada; and Department of Medicine University of Ottawa, Ottawa Hospital Research Institute, Ottawa, ON, Canada