For citations:
Zolotnitskaya V.P., Titova O.N., Kuzubova N.A., Volchkov V.A. Changes in pulmonary circulation of patients with chronic obstructive pulmonary disease and idiopathic pulmonary fibrosis complicated by chronic respiratory failure. PULMONOLOGIYA. 2015;25(5):553-560. (In Russ.) https://doi.org/10.18093/0869-0189-2015-25-5-553-560