TY - JOUR T1 - Radiological manifestations of ankylosing spondylitis according to age at onset. JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 138 LP - 148 DO - 10.1136/ard.30.2.138 VL - 30 IS - 2 AU - M J Riley AU - B M Ansell AU - E G Bywaters Y1 - 1971/03/01 UR - http://ard.bmj.com/content/30/2/138.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -