Association of Red-blood Methylfolate but not Plasma Folate with C677T MTHFR Polymorphism in Venous Thromboembolic Disease - Quéré, I.; Wutschert, R.; Zittoun, J.; Bellet, H.; Reber, G.; Gris, J. C.; Janbon, C.; Schved, J. F.; Moerloose, P. de (Thrombosis and Haemostasis, 1998)