TY JOUR TI CLINICAL CASE SYSTEMIC SCLERODERMA A MIDDLE-AGED WOMAN KW systemic scleroderma KW progressive systemic sclerosis KW Raynaud's syndrome KW purse-string mouth KW sclerodactyly KW masking of the face KW glucocorticosteroids JO Clinical Medicine and Pharmacology AU Demin, M.A. AU Avdeeva, O.S. PY 2023 IS 9 PB LLC Information and publishing center Innovations and investments