Serum myostatin and follistatin levels in patients with dermatomyositis and polymyositis - Sordi, Cintia M. de; Reis-Neto, Edgard T. dos; Keppeke, Gerson D; Shinjo, Samuel Katsuyuki; Sato, Emilia Inoue (Jcr-journal of clinical rheumatology, 2022)