Ahmet AYDIN, et al. “Ranitidine Bismuth Citrate Based Dual and Triple Therapies in Helicobacter Pylori Eradication”. Turkish Journal of Gastroenterology, vol. 10, no. 3, July 2019, pp. 202-6, https://tjg.avesjournals.com/index.php/tjg/article/view/1580.