The heterozygous 20210 G/A prothrombin genotype is associated with early venous thrombosis in inherited thrombophilias and is not increased in frequency in artery disease - Ferraresi, P; Marchetti, G; Legnani, C; Cavallari, E; Castoldi, E; Mascoli, F; Ardissino, D; Palareti, G; Bernardi, F (Arterioscler Thromb Vasc Biol, 1997)