Ahmad, F., M. Z. Khan, B. Ahmed, N. Ullah, M. Asghar, and H. Habib. “ETIOLOGYAND THE ROLE OF PROCTOSIGMOIDOSCOPY IN PATIENTS WITH ACUTE BLOODY DIARRHEAS”. Journal of Postgraduate Medical Institute, vol. 24, no. 3, Oct. 2011, https://www.jpmi.org.pk/index.php/jpmi/article/view/1070.