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APA Citation
Alexis, J. O., Qiu, H., Shen, J. G., & Sultan, K. (n.d.). a Rare Case of Migratory Urticaria Causing Dysphagia During an Acute Flare of Ulcerative Colitis. American journal of gastroenterology, 114, . http://access.bl.uk/ark:/81055/vdc_100122866974.0x000043