Received: 5 July 2017
Accepted: 24 January 2018
First Online: 1 February 2018
Ethics approval and consent to participate
: Following hospital approvals the study was registered as an audit (registration number 1145). The information was gathered and used to evaluate and improve the hospital service and as such Research Ethics Committee review was not required.
: Not applicable
: The authors declare that they have no competing interests.
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