Dey, S. K.; Bakshi, L.; Shahidullah, M.; Habib, A.; Battacharya, M.; Rizvi, A. N.; Anwarullah, A. Digital Subtraction Angiography (DSA) Is Superior to Duplex Ultrasound in Diagnosis of Extracranial Carotid Stenosis - a Comparative Study. Bangladesh Med J 2014, 43, 67-71.