RT Journal Article SR Electronic T1 The heart in ankylosing spondylitis. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 705 OP 706 DO 10.1136/ard.51.6.705 VO 51 IS 6 A1 T W O'Neill A1 B Bresnihan YR 1992 UL http://ard.bmj.com/content/51/6/705.abstract AB