title: Inter- and intraexaminer reliability of the upper cervical X ray marking system: a second look.
authors.forename: D C
authors.initials: DC
authors.lastname: Sigler
authors.forename: J W
authors.initials: JW
authors.lastname: Howe
mesh_terms: D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D002684:Chiropractic / Q000592:standards*; D006801:Humans; D011859:Radiography; D013223:Statistics as Topic