Authors: Gisela Ruiz Heiland; Karin Zwerina; Wolfgang Baum; Trayana Kireva; Jörg H Distler; Mario Grisanti; Frank Asuncion; Xiadong Li; Michael Ominsky; William Richards; Georg Schett; Jochen Zwerina Journal: Ann Rheum Dis Date: 2010-09-21 Impact factor: 19.103