title: Letter: Renal insufficiency after ball-valve prosthesis.
mesh_terms: D001021:Aortic Valve; D005260:Female; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000209:etiology*; D008875:Middle Aged; D011704:Pyelonephritis / Q000209:etiology*