For citations:
Ivchik T.V., Kokosov A.N., Yanchina E.D., Khodzhayants N.E., Razorenov G.I., Kiseleva E.A., Karlova L.N. Risk factors for chronic obstructive pulmonary disease. PULMONOLOGIYA. 2003;(3):6-15. (In Russ.)
Ivchik T.V., Kokosov A.N., Yanchina E.D., Khodzhayants N.E., Razorenov G.I., Kiseleva E.A., Karlova L.N. Risk factors for chronic obstructive pulmonary disease. PULMONOLOGIYA. 2003;(3):6-15. (In Russ.)