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Contributors IDP developed and wrote this article as sole author.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests IDP is associate editor of Frontline Gastroenterology and, as Vice-President Endoscopy of the British Society of Gastroenterology, is a member of the JAG Stakeholder committee.
Provenance and peer review Commissioned; internally peer reviewed.