For citations:
Letaeva MV, Koroleva MV, Raskina TA, Malyshenko OS, Averkieva YV, Usova EV. Results of a prospective 6-year observational study of the efficacy and safety of a bioactive concentrate of small marine fish in senile patients with knee osteoarthritis and multimorbidity. Sovremennaya Revmatologiya=Modern Rheumatology Journal. 2021;15(4):56-62. (In Russ.) https://doi.org/10.14412/1996-7012-2021-4-56-62