Huchchannavar, S., G. Puttannavar, and N. I. Hebsur. “BLEED: A Classification Tool to Predict Outcomes in Patients With Upper and Lower Gastrointestinal Hemorrhage”. International Surgery Journal, vol. 4, no. 8, July 2017, pp. 2683-8, doi:10.18203/2349-2902.isj20173212.