For citations:
Aisanov Z.R., Belotserkovskaya Yu.G., Avdeev S.N., Belevskiy A.S. Current data on improvement in physical tolerance and a role of physical activity in patients with chronic obstructive pulmonary disease. PULMONOLOGIYA. 2019;29(2):207-215. (In Russ.) https://doi.org/10.18093/0869-0189-2019-29-2-207-215