Received: 26 December 2017
Accepted: 27 July 2018
First Online: 22 September 2018
Ethics approval and consent to participate
: The study protocol was reviewed by the internal review panel of the Betsi Cadwaladr University Health Board. In view of the study’s observational nature and the fact that all data were to be de-identified, the Health Board waived the need for formal ethics review or individual patient consent (Research Ethics Committee (REC) reference 16/WA/0026). All participating sites were asked to register the study with their respective audit departments and to comply with their local data protection policies when handling study data. Collaborators consented to the statement that “Health Research Ethics Committee (HREC) approval has been obtained or need for HREC approval been waived locally.” All ethics committees approached gave their approval.
: None applicable.
: The authors declare that they have no competing interests.
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