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APA Citation
Sands, B., Pondel, M., Silver, M., Petersen, A., Wolf, D., Panaccione, R., Loftus, E., Colombel, J., Sturm, A., & D'Haens, G. (n.d.). p031 Impact of Prior Biologic Exposure on Response to Ozanimod for Moderate-to-Severe Ulcerative Colitis in the Phase 3 True North Study. American journal of gastroenterology, 116, S8. http://access.bl.uk/ark:/81055/vdc_100148043519.0x000003