Preliminary Study of Cardiovascular Manifestations and Cardiac Severity Scale in 58 Patients with Systemic Sclerosis in Iran Using the Medsger Scale - Poormoghim, Hadi; Poorkarim, Mohamad Ali; Moradi Lakeh, Maziar; Nozary Heshmati, Behnaz; Almasi, Simin; Hakim, Mojtaba (The Research in Heart Yield and Translational Medicine (RHYTHM))