title: Reply to the editor.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tsukui
mesh_terms: D005260:Female; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery*; D058386:Mitral Valve Annuloplasty; D008945:Mitral Valve Prolapse / Q000601:surgery*