Increased levels of plasma endothelin-1 in non-insulin dependent diabetic patients with retinopathy but without other diabetes-related organ damage - Laurenti, O.; Vingolo, E. M.; Desideri, G. B.; Ferri, C.; Bellini, C.; Cassone-Faldetta, M.; Santucci, A.; De Mattia, G. (Experimental and Clinical Endocrinology & Diabetes, 1997)