DOBRUCALI, Ahmet, et al. “Endoscopic Banding Ligation Compared With Sclerotherapy for the Treatment of Espohageal Varices”. Turkish Journal of Gastroenterology, vol. 9, no. 4, Jan. 1998, pp. 340-4, https://www.turkjgastroenterol.org/index.php/tjg/article/view/921.