For citations:
Makhmutova V.R., Gembitskaya T.E., Chermenskiy A.G., Titova O.N. Analysis of COVID-19 cases in adult cystic fibrosis patients in Saint-Petersburg and the Leningrad region. PULMONOLOGIYA. 2021;31(2):189-196. (In Russ.) https://doi.org/10.18093/0869-0189-2021-31-2-189-196