HARING, O M The mitral patient before and after surgery; diagnostic-graphic investigations. [electronic resource] - American heart journal Jul 1956 - 18-44 p. digital Publication Type: Journal Article ISSN: 0002-8703 Standard No.: 10.1016/0002-8703(56)90116-8 doi Subjects--Topical Terms: DiseaseElectrocardiographyHeart DiseasesHeart MurmursHeart SoundsHeart Valve DiseasesHumansKymographyMitral ValveMitral Valve Stenosis--surgery