A candidate genetic risk factor for vascular disease: a common mutation in methylenetetrahydrofolate reductase - Frosst, P; Blom, H; Milos, R; Goyette, P; Sheppard, C; Matthews, R; Boers, G; den Heijer, M; Kluijtmans, L; Van den Heuvel, L; Rozen, R (Nature Genet, 1995)