Kalashnikovа O. S. “Value of Transoesophageal Echocardiography-Guided Approach to Electrical Cardioversion of Atrial Fibrillation”. Zaporozhye Medical Journal 15, no. 3 (June 13, 2013). Accessed May 6, 2024. http://zmj.zsmu.edu.ua/article/view/13566.