For citations:
Beigel E.A., Kuptsova N.G., Katamanova E.V., Ushakova O.V., Lakhman O.L. Experience in the use of double broncholytic therapy in occupational practice. Russian Journal of Occupational Health and Industrial Ecology. 2019;(5):303-307. (In Russ.) https://doi.org/10.31089/1026-9428-2019-59-5-303-307