RT Journal Article SR Electronic T1 An unusual cause of shoulder pain JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 264 OP 265 DO 10.1136/ard.58.5.264 VO 58 IS 5 A1 P Wong A1 J V Bertouch A1 G A C Murrell A1 M Hersch A1 P P Youssef YR 1999 UL http://ard.bmj.com/content/58/5/264.abstract AB