Long-term ascorbic acid administration reverses endothelial vasomotor dysfunction in patients with coronary artery disease. - Gokce,N.; Keaney,J.F.; Frei,B.; Holbrook,M.; Olesiak,M.; Zachariah,B.J.; Leeuwenburgh,C.; Heinecke,J.W.; Vita,J.A. (Circulation, 1999)