For citations:

Akhmineeva A.Kh., Kespleri E.V., Polunina O.S., Voronina L.P., Polunina E.A., Kuzmichev B.Yu. RELATIONSHIP BETWEEN TOBACCO SMOKING DURATION AND KLOTHO PROTEIN LEVEL IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE. Astrakhan medical journal. 2021;16(1):60-66. (In Russ.) https://doi.org/10.17021/2021.16.1.60.66