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APA Citation
Ehrenstein, B., Pongratz, G., Fleck, M., & Hartung, W. (2018). the ability of rheumatologists blinded to prior workup to diagnose rheumatoid arthritis only by clinical assessment: a cross-sectional study. Rheumatology, 57, 1592–1601. http://access.bl.uk/ark:/81055/vdc_100095491216.0x00001e