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APA Citation
Narula, N., Alshahrani, A. -., Yuan, Y., Reinisch, W., & Colombel, J. -. (n.d.). p191 Systematic review and meta-analysis: Patient-reported outcomes and endoscopic appearance in ulcerative colitis. Journal of Crohn's and colitis, 12, S195. http://access.bl.uk/ark:/81055/vdc_100095482815.0x000010