[1]
F. Sher, R. S. Ullah, J. Khan, S. N. Mansoor, and N. Ahmed, “FREQUENCY OF DIFFERENT CAUSES OF UPPER GASTROINTESTINAL BLEEDING USING ENDOSCOPIC PROCEDURE AT A TERTIARY CARE HOSPITAL: Causes of Upper Gastrointestinal Bleeding”, PAFMJ, vol. 64, no. 3, pp. 410–3, Jun. 2014.