title: [POLYCARDIOGRAPHIC EXAMINATION IN MITRAL LESIONS IN CHILDREN].
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D008944:Mitral Valve Insufficiency; D010701:Phonocardiography
keywords: ADOLESCENCE; CHILD; MITRAL VALVE INSUFFICIENCY; PHONOCARDIOGRAPHY
vernacular_title: POLIKARDIOGRAFICHESKIE ISSLEDOVANIIA PRI MITRAL'NOM POROKE U DETE I.