I was examined and treated in the pulmonology department from 02.08.2021 to 11.08.2021 with exacerbation of COPD. I express my heartfelt gratitude to the whole department: the head of the Department Kagan L.G., specialist pulmonologist Reisen E.V., and especially the Attending Physician-pulmanologist Denisenko Oksana Alekseevna for the treatment in the clinic. This is a very attentive and very talented doctor who was able to determine the course of the disease and prescribe effective treatment. Thank you, dear Oksana Alekseevna! You are a cool, competent specialist, a sensitive person who inspires people with faith and hope for recovery! I wish you further success in your career and personal life. I wish there were more such doctors!!! Many thanks to everyone! Once again, I thank Kagan L. \G., my doctor Denisenko O.A., the entire staff of the pulmonology department of the MCSC.