Mazreku, F. ., S. . Abdushi, F. . Kryeziu, and G. . Vyshka. “Carotid Intima-Media Thickness Seems Not to Correlate With the Severity of Diabetic Retinopathy”. Scientific Journal of Medical Science, vol. 2, no. 5, May 2013, pp. 83-88, http://sjournals.com/index.php/sjms/article/view/1336.