Metwally, Yasser, Ashraf Mahmoud, and Walid Taha. “Metoprolol Versus Low-Dose Sotalol for Prevention of High-Risk Post Coronary Artery Bypass Grafting Atrial Fibrillation”. The Egyptian Cardiothoracic Surgeon 3, no. 2 (March 1, 2021): 63 - 69. Accessed April 14, 2021. https://journals.escts.net/ects/article/view/179.