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class=\u0022highwire-cite-metadata-year highwire-cite-metadata\u0022\u003E2020;\u003C\/span\u003E\u003Cspan class=\u0022highwire-cite-metadata-volume highwire-cite-metadata\u0022\u003E8:\u003C\/span\u003E\u003Cspan class=\u0022highwire-cite-metadata-elocation-id highwire-cite-metadata\u0022\u003Ee000971. \u003C\/span\u003E\u003Cspan class=\u0022highwire-cite-metadata-doi highwire-cite-metadata\u0022\u003E\u003Cspan class=\u0022label\u0022\u003Edoi:\u003C\/span\u003E 10.1136\/jitc-2020-000971 \u003C\/span\u003E\u003C\/div\u003E\n  \n  \n  \n\u003C\/div\u003E\u003C\/div\u003E  \u003C\/div\u003E\n\n  \n  \u003C\/div\u003E\n\u003Cdiv class=\u0022panel-separator\u0022\u003E\u003C\/div\u003E\u003Cdiv class=\u0022panel-pane pane-panels-mini pane-jnl-template-bmjj-art-pub-history\u0022\u003E\n  \n      \n  \n  \u003Cdiv class=\u0022pane-content\u0022\u003E\n    \u003Cdiv class=\u0022panel-display highwire-1col-stacked-layout\u0022 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