For citations:

Chuchalin A.G., Avdeev S.N., Baymakanova G.E., Nuralieva G.S. An open non-comparative trial of efficacy and safety of levofloxacin in acute exacerbation of COPD. PULMONOLOGIYA. 2007;(6):67-72. (In Russ.) https://doi.org/10.18093/0869-0189-2007-0-6-67-72