Schmidt, O. Y., Volkov, D. Y., Brynza, M. S., Uvarova К. H., & Pavlova, D. Y. (2022). Association of atrial fibrillation and atrial flutter with sick sinus syndrome: a review of the issue based on examples of clinical observations. Zaporozhye Medical Journal, 24(2), 240–247. https://doi.org/10.14739/2310-1210.2022.2.248102