Received: 17 September 2017
Accepted: 21 December 2017
First Online: 6 February 2018
Change Date: 18 April 2018
Change Type: Correction
Change Details: Following the publication of this study  the authors identified the following errors inadvertently introduced during the production process:
Ethics approval and consent to participate
: This study was conducted under the UK Health Research Authority regulations as an Audit / Service Evaluation project, not requiring Ethics Approval. Patient consent for anonymised data collection for audit purposes is implicit. Regulatory compliance [as per Data Protection Act (1998), the Caldicott principles (1997) and the NHS Confidentiality code of practice (2003)] was overseen by the Hull and East Yorkshire Hospitals Trust Governance bodies. Audit registration No. 2013.287, Hull and East Yorkshire Hospitals Trust, 29/11/2013.
: Non-applicable. No individually identifiable data are presented in this work.
: All authors listed declare that they have no competing interests relevant to this manuscript.
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