For citations:
Vizel A.A., Avdeev S.N., Vizel I.Yu., Shakirova G.R., Vizel L.A. The condition of patients with sarcoidosis after their transition to IV X-ray stage. PULMONOLOGIYA. 2025;35(5):676-685. (In Russ.) https://doi.org/10.18093/0869-0189-2025-35-5-676-685