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APA Citation
Feitosa, F., Parra, R., Queiroz, N., Flores, C., Schiavetti, B., Azevedo, M., Porto Alegre Rosa, C., Chebli, L., & Chebli, J. (n.d.). p811 Combination biological or small molecule therapy in patients with refractory inflammatory bowel disease: a multicenter Brazilian experience. Journal of Crohn's and colitis, 17, i944. http://access.bl.uk/ark:/81055/vdc_100179844252.0x00002d