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Authors
Piotrkowicz, Alicja
Johnson, Owen
Hall, Geoff
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Article History
First Online: 12 November 2019
Ethics approval and consent to participate
: The work was conducted by research and informatics staff contracted to Leeds Teaching Hospitals Trust Informatics Department using anonymised retrospective data from the Trust. Approval to perform the study was obtained from Leeds Teaching Hospitals Trust Research and Innovation Director and the Trust’s Information Governance lead.
: Not applicable.
: The authors declare that they have no competing interests.
