1. Measurement of colonic transit time based on radio opaque markers in patients with chronic idiopathic constipation; a cross-sectional study;Saberi;Iran Red Crescent Med J,2013
2. Comparison of colonic transit time between patients with constipation-predominant irritable bowel syndrome and functional constipation;Ansari;Indian J Gastroenterol,2010
3. An approach to the diagnosis and management of Rome IV functional disorders of chronic constipation;Aziz;Expert Rev Gastroenterol Hepatol,2020
4. Bowel disorders;Mearin;Gastroenterology,2016
5. Total and segmental colon transit time study in functional constipation: comparison with healthy subjects;Bhate;Gastroenterology Res,2015