ELECTROCARDIOGRAPHIC EVALUATION OF MITRAL VALVOTOMY AND RESTENOSIS.
D006348:Cardiac Surgical Procedures; D004562:Electrocardiography; D006349:Heart Valve Diseases; D006801:Humans; D008946:Mitral Valve Stenosis; D013903:Thoracic Surgery
ELECTROCARDIOGRAPHY; HEART SURGERY; MITRAL VALVE STENOSIS