For citations:

Golovina O.A., Demidova N.V., Alekseeva A.V. Combination of rheumatoid arthritis and sarcoidosis, which had occurred during rituximab therapy, complicated secondary immunodeficiency and intolerance to the main basic drugs: Case repost and literature review. Rheumatology Science and Practice. 2021;59(5):625-630. (In Russ.) https://doi.org/10.47360/1995-4484-2021-625-630