title: Was Alfred Blalock's portrait altered?
authors.forename: G H
authors.initials: GH
authors.lastname: Almass
mesh_terms: D002309:Cardiology / Q000266:history; D049673:History, 20th Century; D006801:Humans; D011173:Portraits as Topic / Q000266:history*; D012907:Smoking / Q000266:history*