Elevated total plasma homocysteine and C>T mutation of the 5,10-methylenetetrahydrofolate reductase gene in thrombotic vascular disease - De, Franchis P; Mancini, F P; D’Angelo, A; Sebastio, G; Fermo, I; De, Stefano J; Margaglione, M; Mazzola, G; Di, Minno G; Andria, G (Am J Hum Genet, 1996)