GÖRGÜL, Ahmet, et al. “The Results and Comparison of Rubber Band Ligation and Injection Sclerotherapy Supplemented by High-Fibre Diet in the Treatment of Second-Degree Internal Hemorrihoids”. Turkish Journal of Gastroenterology, vol. 10, no. 1, Jan. 1999, pp. 66-71, https://www.turkjgastroenterol.org/index.php/tjg/article/view/952.