Asil, M., R. Dertli, M. Biyik, H. Ataseven, H. Polat, and A. Demir. “Duodenal Varices Diagnosed By Endoscopic Ultrasound: A Case Report”. Annals of Medical Research, vol. 24, no. 3, May 2021, pp. 0338-41, http://www.annalsmedres.org/index.php/aomr/article/view/2109.