Kulynych, T. O., O. O. Lisova, O. V. Shershnova, and A. V. Hrytsai. 2021. “Heart Rhythm and Autonomic Regulation Disorders in Chronic Coronary Syndrome Patients With Community-aсquired Pneumonia”. Zaporozhye мedical Journal 23 (6):766-71. https://doi.org/10.14739/2310-1210.2021.6.235435.