Schmidt, O. Yu., D. Ye. Volkov, M. S. Brynza, Uvarova К. H., and D. Yu. Pavlova. “Association of Atrial Fibrillation and Atrial Flutter With Sick Sinus Syndrome: A Review of the Issue Based on Examples of Clinical Observations”. Zaporozhye мedical journal 24, no. 2 (April 4, 2022): 240–247. Accessed April 28, 2024. http://zmj.zsmu.edu.ua/article/view/248102.