title: Open wider!
authors.forename: R E
authors.initials: RE
authors.lastname: Horseman
mesh_terms: D005060:Europe; D049672:History, 19th Century; D049673:History, 20th Century; D011861:Radiography, Dental / Q000266:history*; D011871:Radiology / Q000266:history; D014481:United States