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APA Citation
Ahmed, A., Armstrong, M., Robertson, I., Blatchford, O., Morris, J., & Stanley, A. (n.d.). oC-141 Upper GI bleeding in Scotland 2000–2010: improving outcome but a significant weekend effect. Gut, 61, A61. http://access.bl.uk/ark:/81055/vdc_100137783633.0x00004e