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APA Citation
Barkham, N., Coates, L. C., Keen, H., Hensor, E., Fraser, A., Redmond, A., Cawkwell, L., & Emery, P. (2010). double-blind placebo-controlled trial of etanercept in the prevention of work disability in ankylosing spondylitis. Annals of the rheumatic diseases, 69(11), 1926–1928. http://access.bl.uk/ark:/81055/vdc_100135137547.0x000058