RT Journal Article SR Electronic T1 Difficulties making a fist in clinically suspect arthralgia: an easy applicable phenomenon predictive for RA that is related to flexor tenosynovitis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1438 OP 1439 DO 10.1136/annrheumdis-2019-215402 VO 78 IS 10 A1 Fenne Wouters A1 Florus J van der Giesen A1 Xanthe M E Matthijssen A1 Ellis Niemantsverdriet A1 Annette H M van der Helm-van Mil YR 2019 UL http://ard.bmj.com/content/78/10/1438.abstract AB