Nazmiye KOYUNCU, et al. “This Research Imes to Determine Whether Dyspepsia Is a Serious Problem for Our Society. The Frequency of Dyspepsia Has Been Explored in Different Parts of the Societ in Ankara”. Turkish Journal of Gastroenterology, vol. 6, no. 1, Apr. 2020, pp. 121-4, https://tjg.avesjournals.com/index.php/tjg/article/view/922.