title: Delay in the radiographic detection of sacroiliitis in ankylosing spondylitis.
authors.forename: M A
authors.initials: MA
authors.lastname: Khan
mesh_terms: D001168:Arthritis / Q000150:complications* / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography; D012446:Sacroiliac Joint; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging*; D013997:Time Factors