The effect of vitamin E on endothelial function of micro- and macrocirculation and left ventricular function in type 1 and type 2 diabetic patients. - Economides PA; Khaodhiar L; Caselli A; Caballero AE; Keenan H; Bursell SE; King GL; Johnstone MT; Horton ES; Veves A (Diabetes, 2005)