RT Journal Article SR Electronic T1 Bone mineral density improvement in spondyloarthropathy after treatment with etanercept JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1020 OP 1021 DO 10.1136/ard.62.10.1020 VO 62 IS 10 A1 H Marzo-Ortega A1 D McGonagle A1 G Haugeberg A1 M J Green A1 S P Stewart A1 P Emery YR 2003 UL http://ard.bmj.com/content/62/10/1020.abstract AB