Bilchenko, O., Ospanova, T., Khimich, T., Veremeyenko, O., Krasovskaya, Y. and Manchenko , Y. 1. Risk factors that contribute to the severe course and progression of community-acquired pneumonia. The Journal of V.N.Karazin Kharkiv National University. Series «Biology». 28, (1), 219-223. DOI:https://doi.org/10.26565/2075-5457-2017-28-29.