title: International day of radiology 2013: opportunity knocks.
authors.forename: Paul H
authors.initials: PH
authors.lastname: Ellenbogen
mesh_terms: D049673:History, 20th Century; D049674:History, 21st Century; D006693:Holidays; D038622:Internationality / Q000266:history*; D013902:Radiography, Thoracic / Q000266:history*; D011871:Radiology / Q000266:history*