Abdelgawad, Basem, Yousry Shahin, Anhar Abd-Ellatif, Mohamed Abdelrahman, Mohamed Ali, Ahmed El sayad, and Mohamed Elgazzar. “The Preoperative Use of Levosimendan in Patients Undergoing Coronary Artery Bypass Surgery With Low Ejection Fraction”. The Egyptian Cardiothoracic Surgeon 3, no. 4 (July 1, 2021): 102 - 107. Accessed October 21, 2021. https://journals.escts.net/ects/article/view/194.