Parmar, Hardik, Arun R., Sahdevsinh Chauhan, and Akshay Sutaria. “Efficacy of OPD Based Rigid Sigmoidoscopy in Diagnosing the Patients With Bleeding Per Rectum”. International Surgery Journal 6, no. 1 (December 27, 2018): 261–264. Accessed February 11, 2025. https://www.ijsurgery.com/index.php/isj/article/view/3683.