A. Muhammad, A. Khan, K. R. Butt, J. Khan, F. Akbar, and U. B. Zubair, “Association of Esophageal Varices with Portal Vein Diameter More Than 13 mm in Chronic Liver Disease Patients”, Pak Armed Forces Med J, vol. 72, no. 1, pp. 127–30, Feb. 2022, doi: 10.51253/pafmj.v72i1.2925.