Gupta, D. E., D. N. Usman, and D. A. Gupta. “Sonographic Evaluation Of Portal Vein Diameter In North Indian Population: Sonographic Evaluation Of Portal Vein”. National Journal of Integrated Research in Medicine, vol. 4, no. 2, Apr. 2013, pp. 1-4, doi:10.70284/njirm.v4i2.2137.