Authors: J N Hoes; J W G Jacobs; M Boers; D Boumpas; F Buttgereit; N Caeyers; E H Choy; M Cutolo; J A P Da Silva; G Esselens; L Guillevin; I Hafstrom; J R Kirwan; J Rovensky; A Russell; K G Saag; B Svensson; R Westhovens; H Zeidler; J W J Bijlsma Journal: Ann Rheum Dis Date: 2007-07-27 Impact factor: 19.103