Orhan Sezgin, et al. “Population-Based Assessment of Gastrointestinal Symptoms and Diseases: Cappadocia Cohort, Turkey”. Turkish Journal of Gastroenterology, vol. 30, no. 12, Dec. 2019, pp. 1009-20, https://tjg.avesjournals.com/index.php/tjg/article/view/3818.