Rehan, B., M. M. ul Haq, and R. K. Wadwa. “Diagnostic Accuracy of Harbinger Score by Comparing It With Glasgow Blatchford (GBS) for Prediction of Early Endoscopic Intervention Need in Patients With Upper Gastrointestinal Bleed (UGIB): Diagnostic Accuracy of Harbinger Score”. Pakistan Journal of Health Sciences, vol. 4, no. 11, Nov. 2023, pp. 71-76, doi:10.54393/pjhs.v4i11.1165.