“Digital Subtraction Angiography (DSA) Is Superior to Duplex Ultrasound in Diagnosis of Extracranial Carotid Stenosis - a Comparative Study”. Bangladesh Medical Journal 43, no. 2 (December 30, 2014): 67–71. Accessed July 7, 2026. https://www.banglajol.info/index.php/BMJ/article/view/21385.