For citations:
Mirtskhulava N.G., Voenbrand K.L., Shvayka A.V. Relationships between quality of life and maintenance therapy in patients with chronic obstructive pulmonary disease. PULMONOLOGIYA. 2013;(4):56-59. (In Russ.) https://doi.org/10.18093/0869-0189-2013-0-4-56-59