Islam, Md Saiful, et al. “Superiority of Admission Blood Urea Nitrogen over Serum Creatinine in Predicting In-Hospital Outcome of Patients With Acute Coronary Syndrome”. Cardiovascular Journal, vol. 14, no. 2, Apr. 2022, pp. 135-42, doi:10.3329/cardio.v14i2.58778.