Sakakibara, Y Implantation of a mechanical valve within a flexible mitral annular ring. [electronic resource] - The Annals of thoracic surgery Dec 1999 - 2336-8 p. digital Publication Type: Journal Article ISSN: 0003-4975 Standard No.: 10.1016/s0003-4975(99)00872-3 doi Subjects--Topical Terms: Heart Valve Prosthesis ImplantationHumansMitral Valve--surgeryProsthesis DesignReoperation