GÜRBÜZ, A. Kemal, et al. “A Comparative Study in Grade-1 Reflux Esophagitis: High Dose Ranitidine Versus Conventional Dose Ranitidine Combined With Cisapride”. Turkish Journal of Gastroenterology, vol. 6, no. 1, Jan. 1995, pp. 75-78, https://turkjgastroenterol.org/index.php/tjg/article/view/574.