Authors: E N van Roon; T L T A Jansen; M A F J van de Laar; M Janssen; J P Yska; R Keuper; P M Houtman; J R B J Brouwers Journal: Ann Rheum Dis Date: 2004-09-02 Impact factor: 19.103
Authors: C Fiehn; S Jacki; B Heilig; M Lampe; G Wiesmüller; C Richter; E Röther; E Rochel; I Gao Journal: Rheumatol Int Date: 2007-04-12 Impact factor: 3.580