For citations:
Chuchalin A.G. Pneumonia as an actual medical problem of the 21th century. PULMONOLOGIYA. 2015;25(2):133-142. (In Russ.) https://doi.org/10.18093/0869-0189-2015-25-2-133-142
Chuchalin A.G. Pneumonia as an actual medical problem of the 21th century. PULMONOLOGIYA. 2015;25(2):133-142. (In Russ.) https://doi.org/10.18093/0869-0189-2015-25-2-133-142