Rehan, B., ul Haq, M. M. and Wadwa, R. K. (2023) “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. Pakistan, 4(11), pp. 71–76. doi: 10.54393/pjhs.v4i11.1165.