Ammar Hassanzadeh Keshteli, et al. “Risk Factors of Bloating and Its Association With Common Gastrointestinal Disorders in a Sample of Iranian Adults”. Turkish Journal of Gastroenterology, vol. 28, no. 3, July 2019, pp. 179-90, https://tjg.avesjournals.com/index.php/tjg/article/view/3383.