title: Clarification on history of the AP open mouth radiograph.
authors.forename: John
authors.initials: J
authors.lastname: Hart
mesh_terms: D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D002684:Chiropractic / Q000266:history; D049673:History, 20th Century; D006801:Humans; D009055:Mouth; D011859:Radiography / Q000266:history* / Q000379:methods