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APA Citation
Mak, W. Y., Adegbola, S., Sahnan, K., Tozer, P., Lung, P., Hart, A., & Ng, S. C. (n.d.). p319 Long-term outcomes after anti-TNF therapy withdrawal in patients with radiologically healed perianal Crohn's fistulas. Journal of Crohn's and colitis, 12, S262. http://access.bl.uk/ark:/81055/vdc_100095484538.0x000013