title: Letter by Alfonso et al regarding article, "Impact of intravascular ultrasound guidance on long-term mortality in stenting for unprotected left main coronary artery stenosis".
authors.forename: Fernando
authors.initials: F
authors.lastname: Alfonso
authors.forename: Jaime
authors.initials: J
authors.lastname: Dutary
authors.forename: Brian
authors.initials: B
authors.lastname: Zakhem
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000401:mortality* / Q000628:therapy*; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D006801:Humans; D009204:Myocardial Revascularization / Q000379:methods; D015607:Stents; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional