RT Journal Article SR Electronic T1 Lumbar Spine and Back Pain JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 880 OP 880 DO 10.1136/ard.46.11.880-a VO 46 IS 11 A1 B J Sweetman YR 1987 UL http://ard.bmj.com/content/46/11/880.1.abstract AB