Pre- and Postoperative Urea Levels in Open Heart Surgery: Assessment as a Risk Factor for Predicting Mortality - A Retrospective Analysis. SRINMED [Internet]. 09 Ocak 2025 [a.yer 05 Şubat 2026];1(3):107-25. Erişim adresi: https://srinmed.akademisyen.net/index.php/srinmed/article/view/24