For citations:

Luchihina E.L., Karateev D.E., Novikov A.A., Nasonov E.L. Predicting the development of rheumatoid arthritis in patients with early undifferentiated arthritis. Rheumatology Science and Practice. 2009;47(2):31-37. (In Russ.) https://doi.org/10.14412/1995-4484-2009-456