Prevalence of the 677C to T Mutation in the Methylenetetrahydrofolate Reductase Gene in Italian Patients with Venous Thrombotic Disease - De Stefano, Valerio; Chiusolo, Patrizia; Paciaroni, Katia; Serra, Fabio G.; Voso, Maria Teresa; Casorelli, Ida; Rossi, Elena; Leone, Giuseppe (Thrombosis and Haemostasis, 1998)