RT Journal Article SR Electronic T1 Can biomarkers differentiate psoriatic arthritis from osteoarthritis? JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP e112 OP e112 DO 10.1136/annrheumdis-2019-215745 VO 79 IS 9 A1 Jian Tian A1 Chao Cheng A1 Fangjie Zhang YR 2020 UL http://ard.bmj.com/content/79/9/e112.abstract AB