For citations:
Shpagin I.S., Kotova O.S., Kamneva N.V., Kuznetsova G.V., Logvinenko K.V., Lisova E.S. Professional chronic obstructive pulmonary disease in combination with heart failure — clinical and functional features. Russian Journal of Occupational Health and Industrial Ecology. 2019;1(7):388-394. (In Russ.) https://doi.org/10.31089/1026-9428-2019-59-7-388-394