Kakale, Shehu B, Sadisu M Maaji, and Shamsudden A Aliyu. 2016. “Lower Extremities Duplex-Doppler Ultrasonography for the Detection of Suspected Deep Venous Thrombosis: A Preliminary Report from Sokoto”. Asian Journal of Medical Sciences 7 (6):53-57. https://doi.org/10.3126/ajms.v7i6.14489.