Jaury DF, Mappangara I, Rasyid H, Bakri S, Aman AM, Zainuddin AA. The correlation between ejection fraction values and blood urea nitrogen levels and blood urea nitrogen/creatinine ratios in heart failure. Acta Biomed [Internet]. 2026 Feb. 27 [cited 2026 Apr. 17];97(1):18138 . Available from: https://mattioli1885journals.com/index.php/actabiomedica/article/view/18138