Ramazan ÖZTÜRK, and Satish S. C. RAO. 2019. “Defecation Disorders: An Important Subgroup of Functional Constipation, Its Pathophysiology, Evaluation and Treatment With Biofeedback”. Turkish Journal of Gastroenterology 18 (3):139-49. https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/2114.