Kurt, Erdem, and Sebnem Zeynep Eke Kurt. “Predictive Value of Blood Urea Nitrogen to Serum Albumin Ratio in Estimating in-Hospital Mortality in Patients With Upper Gastrointestinal Bleeding”. European Journal of Clinical and Experimental Medicine 20, no. 3 (September 30, 2022): 342–347. Accessed December 28, 2025. https://journals.ur.edu.pl/ejcem/article/view/11970.