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MLA Citation
S Ghosh et al.. “P680 Long-term efficacy of ustekinumab with and without concomitant immunosuppressants for Crohn's disease: results from IM-UNITI long-term extension through 2 years.” Journal of Crohn's and colitis, vol. 13, n.d., pp. S459–S460. http://access.bl.uk/ark:/81055/vdc_100092360054.0x00000e