Letter to the Editor
                                    Mitral valve leaflet strain imaging with echocardiography opens new windows to mitral valve study
                                    
                                    
                                                                                                                                    1Department of Cardiology, Madani Heart Hospital, Tabriz University of Medical Sciences, Tabriz-Iran
2Department of Cardiology Tabriz University of Medical Sciences, Tabriz
                                                                                                                        
                                    
                                2Department of Cardiology Tabriz University of Medical Sciences, Tabriz