Gamze Aydın, et al. “The Turkish Version of the Childhood Bladder and Bowel Dysfunction Questionnaire (CBBDQ): Cross–cultural Adaptation, Reliability and Construct Validity”. Turkish Journal of Gastroenterology, vol. 31, no. 6, May 2020, pp. 482-8, https://tjg.avesjournals.com/index.php/tjg/article/view/3906.