title: Extrinsic obstruction of the Medtronic-Hall disc valve in the mitral position.
authors.forename: G P
authors.initials: GP
authors.lastname: Pai
authors.forename: J W
authors.initials: JW
authors.lastname: Rubin
mesh_terms: D006350:Heart Valve Prosthesis; D006801:Humans; D008943:Mitral Valve; D011474:Prosthesis Design; D011475:Prosthesis Failure