Funding for this research was provided by:
Health Research Board (CTN-2014-011)
Received: 28 April 2018
Accepted: 16 January 2019
First Online: 30 January 2019
Ethics approval and consent to participate
: Ethical approval for the study was received from the Irish College of General Practitioners’ Research Ethics Committee (no reference number, approved January 2016) and the Office for Research Ethics Committees of Northern Ireland (16/NI/0008, approved February 2016). Written informed consent was obtained from all participants.
: Not applicable: no details of any individuals are reported within the paper.
: The authors declare that they have no competing interests.
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