title: Controversy section introduction.
authors.affiliation: University Hospitals Case Medical Center, Cleveland, OH 44106, USA. kristine.blackham@UHhospitals.org
authors.forename: Kristine A
authors.initials: KA
authors.lastname: Blackham
mesh_terms: D016893:Carotid Stenosis / Q000601:surgery; D002983:Clinical Competence / Q000592:standards; D002986:Clinical Trials as Topic / Q000379:methods / Q000639:trends; D057510:Endovascular Procedures / Q000193:education* / Q000379:methods / Q000639:trends; D006801:Humans; D012955:Societies, Medical; D020521:Stroke / Q000601:surgery