C667T mutation of the 5.10-methylenetetrahydrofolate reductase gene and hyperhomocysteinaemia in thrombotic vascular disease - De Franchis, R; Mancini, FP; D’Angelo, A; Sebastio, G; Fermo, I; De Stefano, V; Margaglione, M; Mazzola, G; Di Minno, G; Andria, G (Am J Hum Genet, 1996)