LUISADA, A A Early changes of mitral valve function in rheumatic heart disease; a clinical, phonocardiographic and electrokymographic study. [electronic resource] - The American journal of medicine Jul 1953 - 25-34 p. digital Publication Type: Journal Article ISSN: 0002-9343 Standard No.: 10.1016/0002-9343(53)90052-7 doi Subjects--Topical Terms: HumansMitral Valve--physiologyRheumatic Heart Disease--complications