For citations:
Udachkina E.V., Novikova D.S., Popkova T.V., Nasonov E.L. SIGNIFICANCE OF HEART RHYTHM VARIABILITY IN RHEUMATOID ARTHRITIS. Rheumatology Science and Practice. 2015;53(6):646-652. (In Russ.) https://doi.org/10.14412/1995-4484-2015-646-652