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APA Citation
Plener, I., Ferguson, C., Kashkooli, S., & Saibil, F. (2014). letter: oral B12 replacement in Crohn's disease – is B12 by injection obsolete?. Alimentary pharmacology & therapeutics, 40(11), 1365–1366. http://access.bl.uk/ark:/81055/vdc_100024982477.0x000041