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APA Citation
Mao, E. J., Shah, S. A., Mallette, M., Machan, J. T., Shapiro, J., Bright, R., Moniz, H., Merrick, M., & Sands, B. (n.d.). seronegative Status Is Associated with Less Severe Disease Phenotype in Newly Diagnosed Crohn's Disease in the Community. American journal of gastroenterology, 111, . http://access.bl.uk/ark:/81055/vdc_100123025878.0x00002c