El-Shazly, T. A., Ahmed, M. E. S., Abd-Almodaber, A. M., Hussain, A. F. A. (2022). 'Scoring Systems Used to Predict Mortality in Patients with Acute Upper Gastrointestinal Bleeding in Emergency Room', The Egyptian Journal of Hospital Medicine, 87(1), pp. 1920-1927. doi: 10.21608/ejhm.2022.231657