title: Reply to the editor.
authors: Brett
authors: B
authors: Doble
authors: Feng
authors: F
authors: Xie
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D006328:Cardiac Catheterization / Q000191:economics* / Q000379:methods*; D019918:Heart Valve Prosthesis Implantation / Q000191:economics* / Q000379:methods*; D006801:Humans