Areej Amber Khan , Hina Nasir, M Habib Afzaal, Samia Amin. “Doppler Waveform Abnormalities of Hepatic Veins With Histological Changes in Chronic Hepatitis - C Infection”. Journal of Rawalpindi Medical College, vol. 20, no. 3, Sept. 2016, http://journalrmc.com/index.php/JRMC/article/view/168.