(1)
Chowdhury, R. N.; Rahman, K. M.; Khan, S. U.; Sarker, R.; Nabi, S.; Siddiqui, M. R.; Mohammad, Q. D. Digital Subtraction Angiogram (DSA) Is Superior to Duplex Ultrasound (USD) in Diagnosis of Extracranial Carotid Stenosis - A Comparative Study. J. Medicine 2011, 12, 12-16.