“Predictors of Early Recurrence of Arrhythmia Among Patients With Nonvalvular Persistent Atrial Fibrillation and Flutter After Cardioversion”. Ukrainian Journal of Cardiology, no. 5 (November 8, 2017): 56–62. Accessed May 7, 2024. https://ucardioj.com.ua/index.php/UJC/article/view/113.