RT Journal Article SR Electronic T1 Natural killer cell function in ankylosing spondylitis. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 790 OP 791 DO 10.1136/ard.47.9.790 VO 47 IS 9 A1 D Wendling A1 E Racadot A1 M Guidet YR 1988 UL http://ard.bmj.com/content/47/9/790.abstract