... interpretation of data and drafted the manuscript; EB and AS participated in the design of the study, performed the acquisition of data, and critically revised the manuscript. EV and HG contributed to the ... contributed to the statistical analysis and interpretation of data and critically revised the manuscript. ML, PH and TJ contributed to the acquisition of clinical data and critically revised the manuscript. ... continuation of TNF-a blocking therapy. These registries showed thatraised inflammatory markers, lower Bath AnkylosingSpondylitis Functional Index (BASFI), and younger age at baseline were associated...