For citations:

Kaleda M.I., Salugina S.O., Fedorov E.S., Ananyeva L.P. Pulmonary Involvement at Connective Tissue Systemic Diseases in Children. Current Pediatrics. 2021;20(2):134-143. (In Russ.) https://doi.org/10.15690/vsp.v20i2.2257