Authors: M Backhaus; G R Burmester; T Gerber; W Grassi; K P Machold; W A Swen; R J Wakefield; B Manger Journal: Ann Rheum Dis Date: 2001-07 Impact factor: 19.103
Authors: R J Wakefield; M J Green; H Marzo-Ortega; P G Conaghan; W W Gibbon; D McGonagle; S Proudman; P Emery Journal: Ann Rheum Dis Date: 2004-04 Impact factor: 19.103