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APA Citation
Wright, A. P., Piper, M. S., Bishu, S., & Stidham, R. W. (2019). systematic review and case series: flexible sigmoidoscopy identifies most cases of checkpoint inhibitor‐induced colitis. Alimentary pharmacology & therapeutics, 49(12), 1474–1483. http://access.bl.uk/ark:/81055/vdc_100084065900.0x00003a