title: Abraham Lincoln and the 'Lincoln sign'.
authors.affiliation: Associate program director, Internal Medicine Residency Program, Section of Hospital Medicine, Cleveland Clinic, OH 44195, USA. kroenc@ccf.org
authors.forename: Collin
authors.initials: C
authors.lastname: Kroen
mesh_terms: D001022:Aortic Valve Insufficiency / Q000503:physiopathology; D005197:Famous Persons; D005528:Foot / Q000473:pathology; D049672:History, 19th Century; D006801:Humans; D008382:Marfan Syndrome / Q000175:diagnosis / Q000266:history* / Q000503:physiopathology; D011150:Popliteal Artery / Q000473:pathology; D011173:Portraits as Topic