For citations:
Nikitin A.V., Vasilyeva L.V., Karpukhina E.P., Tolstykh E.M. HISTORIC DEVELOPMENT OF THE CHRONIC OBSTRUCTIVE PULMONARY DISEASE CLASSIFICATION. Tuberculosis and Lung Diseases. 2018;96(1):51-56. (In Russ.) https://doi.org/10.21292/2075-1230-2018-96-1-51-56