RT Journal Article SR Electronic T1 Association between focal erosions and generalised bone loss in psoriatic arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1345 OP 1347 DO 10.1136/ard.2010.148452 VO 70 IS 7 A1 A P Anandarajah A1 M El-Taha A1 C Peng A1 G Reed A1 J D Greenberg A1 C T Ritchlin YR 2011 UL http://ard.bmj.com/content/70/7/1345.abstract AB