Hyperhomocyst(e)inemia is a risk factor for arterial endothelial dysfunction in humans. - Woo,K.S.; Chook,P.; Lolin,Y.I.; Cheung,A.S.; Chan,L.T.; Sun,Y.Y.; Sanderson,J.E.; Metreweli,C.; Celermajer,D.S. (Circulation, 1997)