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APA Citation
Khan, M. Z., Singh, A. D., Khoudari, G., Alkhayyat, M., Delicce, M., Abou-Saleh, M., Cooper, G., Sinh, P., Cominelli, F., Falck-Ytter, Y., Linz, C., Katz, J., Regueiro, M., & Mansoor, E. (n.d.). s823 Demographics and Clinical Characteristics of Crohn's Disease Patients Switched to a Non-Anti-TNF Agent After Initial Primary Non-Response With Anti-TNF Agent: A National Database Study. American journal of gastroenterology, 116, S380–S381. http://access.bl.uk/ark:/81055/vdc_100144523385.0x00001e