For citations:

Panafidina T.A., Kondratyeva L.V., Gerasimova E.V., Novikova D.S., Popkova T.V. COMORBIDITY IN RHEUMATOID ARTHRITIS. Rheumatology Science and Practice. 2014;52(3):283-289. (In Russ.) https://doi.org/10.14412/1995-4484-2014-283-289