For citations:
Sorokina A. ., Demin N.V., Dobrovolskaya .V., Toroptsova N.V. The frequency of sarcopenia and factors affecting appendicular muscle mass in patients with systemic sclerosis. The Clinician. 2022;16(1):21-28. (In Russ.) https://doi.org/10.17650/1818-8338-2022-16-1-K660