A retrospective cohort study: pre-operative oral enteral nutritional optimisation for Crohn's disease in a UK tertiary IBD centre.

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"CONFLICT OF INTEREST SM has received speaker fees from FalkPharma and an educational grant from Pfizer. KP has received honoraria for educational meetings and speaker fees from Abbvie, Janssen, Takeda, DrFalk, PredictImmune and Ferring. KP has received Advisory Board fees from Abbvie, Galapagos and Janssen. RPL has received educational grants from Ferring, Pfizer and Vifor Pharma. PMI: AbbVie, Celgene, Falk Pharma, Ferring MSD, Janssen, Pfizer, Takeda, Tillotts, Sandoz, Shire, Warner Chilcott ‐ Speaking/education, intermittent (last 3 years). SH has received lecture fees from Pfizer, Janssen and Takeda. DOH, AC, PP, CA, NG, SZ, SR, JM, MAS, SHA, KA, AD, AW, JDS, ML none declared."

"Funding information No funding was required for this project"