For citations:
Nevzorova V.A., Kondrashova E.A., Bogdanov D.Yu., Bondareva Zh.V. Early signs of airflow restriction and cardiovascular damage in conditionally healthy smokers. PULMONOLOGIYA. 2021;31(1):57-65. (In Russ.) https://doi.org/10.18093/0869-0189-2021-31-1-57-65