For citations:

Avdeev S.N., Nuralieva G.S., Batin S.Z., Chuchalin A.G. Efficacy of therapy with Berodual N by means of small spacers in patients with acute exacerbations of obstructive pulmonary diseases. PULMONOLOGIYA. 2005;(6):86-90. (In Russ.) https://doi.org/10.18093/0869-0189-2005-0-6-86-90