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APA Citation
Li, D. K., Levine, L. J., Chaar, A., McMillan, C., Gaidos, J. K., Proctor, D., & Al-Bawardy, B. (n.d.). s856 Predictors of Colectomy in Acute Severe Ulcerative Colitis. American journal of gastroenterology, 117, e618–e619. http://access.bl.uk/ark:/81055/vdc_100169531378.0x000057