Zada, I., N. Ahmed, R. Tabassum, M. Naqvi, S. I. Dar, and M. Abdullah. “Etiological Factors in Patients With Lower Gastrointestinal Bleeding at a Tertiary Care Hospital of Islamabad Pakistan: Etiological Factors in Patients With Lower Gastrointestinal Bleeding”. Pakistan Journal of Health Sciences, vol. 6, no. 8, Aug. 2025, pp. 128-33, doi:10.54393/pjhs.v6i8.3168.