Mahmut ÖZER, et al. “In Vitro Effects of Famotidine and Ranitidine on Lower Esophageal Sphincter Tone in Rats”. Turkish Journal of Gastroenterology, vol. 23, no. 5, July 2019, pp. 438-43, https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/2680.