For citations:
Shmelev E.I. COPD and co-morbidity. PULMONOLOGIYA. 2007;(2):5-9. (In Russ.) https://doi.org/10.18093/0869-0189-2007-0-2-5-9
Shmelev E.I. COPD and co-morbidity. PULMONOLOGIYA. 2007;(2):5-9. (In Russ.) https://doi.org/10.18093/0869-0189-2007-0-2-5-9