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Manolakis AC is a Hellenic Society of Gastroenterology grant holder. Yuto Shimamura declares that he has no conflict of interest. Akiko Ueno declares that she has no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of Interest"}},{"value":"This article does not contain any studies with human or animal subjects performed by any of the authors.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Human and Animal Rights and Informed Consent"}}]}}