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APA Citation
Leiper, K., Martin, K., Ellis, A., Subramanian, S., Watson, A. J., Christmas, S. E., Howarth, D., Campbell, F., & Rhodes, J. M. (2011). randomised placebo-controlled trial of rituximab (anti-CD20) in active ulcerative colitis. Gut, 60(11), 1520–1526. http://access.bl.uk/ark:/81055/vdc_100135156719.0x000042