The G20210A mutation of the prothrombin genein patients with previous first episode of deep-vein thrombosis: prevalence and association with factor V G1691A, methylenetetrahydrofolate reductase C677T and plasma prothrombin levels - Cattaneo, M; Chantarangkul, V; Taioli, E; Santos, JH; Tagliabue, L (Thromb Res, 1999)