For citations:
Nikitina L.Yu., Gasymova S.Sh., Ulyanov A.A., Shashkova T.V., Petrovskaya Yu.A., Petrovsky F.I. Exercise induced bronchoconstriction and expiratory nitric oxide level in winter sports athletes. PULMONOLOGIYA. 2012;(1):61-65. (In Russ.) https://doi.org/10.18093/0869-0189-2012-0-1-61-65