Mitral Regurgitation after Percutaneous Balloon Mitral Valvotomy in Patients with Rheumatic Mitral Stenosis: A Single-Center Study - Aslanabadi, Naser; Toufan, Mehrnoush; Salehi, Rezvaneyeh; Alizadehasl, Azin; Ghaffari, Samad; Sohrabi, Bahram; Separham, Ahmad; Manafi, Ataolaah; Mehdizadeh, Mohammad-Bagher; Habibzadeh, Afshin (The Research in Heart Yield and Translational Medicine (RHYTHM), 2015)