A common mutation C677 T in the 5,10-methyltetrahydrofolate reductase gene is associated to idiopathic deep venous thrombosis. - Berrut,G.; Ghali,A.; Quere,I.; Ternisien,C.; Gallois,I.; Roy,P.M.; Marre,M.; Fressinaud,P. (Revue de Médecine Interne, 2003)