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Bibliography:Letter
SourceType-Scholarly Journals-1
ObjectType-Correspondence-2
content type line 14
ObjectType-Letter to the Editor-1
ObjectType-Correspondence-1
ObjectType-Commentary-2
content type line 23
ISSN:0017-5749
1468-3288
1468-3288
DOI:10.1136/gutjnl-2020-322072