title: Letter to the editor.
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Iguchi
authors.forename: Takao
authors.initials: T
authors.lastname: Hasegawa
mesh_terms: D006328:Cardiac Catheterization; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000175:diagnosis*; D005260:Female; D053805:Fractional Flow Reserve, Myocardial; D006801:Humans; D008297:Male