For citations:
Yakushin S.S., Smirnova E.A., Yakushin K.S. Efficacy of long-term therapy of chronic obstructive bronchitis. PULMONOLOGIYA. 2001;(3):73-76. (In Russ.)
Yakushin S.S., Smirnova E.A., Yakushin K.S. Efficacy of long-term therapy of chronic obstructive bronchitis. PULMONOLOGIYA. 2001;(3):73-76. (In Russ.)