For citations:

Novikova I.A., Ramaniva A.A., Khoduleva S.A., Kadochkina N.G., Prokopovich S.S. Crohn’s disease as a debut of common variable immunodeficiency. Health and Ecology Issues. 2024;21(1):123-128. (In Russ.) https://doi.org/10.51523/2708-6011.2024-21-1-15