... no inflammation; 1 = slight thickening of synovialcell layer and/ or some inflammatory cells in the sublin-ing; 2 = thickening of synovi al li ning and moderate infil-tration o f the sublining; ... design and coordination of the study, and revision of the manuscript. AG performed the statistical analysis, and participated in design of the study, interpretation of data and drafting the manuscript. ... CCconceived of the study, and participated in its design, in coordination and interpretation of the data and in drafting the manuscript. All authors read and approved the final manuscript.Competing interestsThe...