Basak, D. K., R. R. Gomes, and M. S. Arfin. “Duodenal Varices: A Rare Manifestation of Portal Hypertension”. Journal of Bangladesh College of Physicians and Surgeons, vol. 37, no. 3, June 2019, pp. 156-9, doi:10.3329/jbcps.v37i3.41738.