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Authors
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Funding
Funding for this research was provided by:
Medical Research Scotland (Vac-965-2016)
Health Services and Delivery Research Programme (NIHR HS&DR 11/2003/27)
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Article History
Received: 19 July 2019
Accepted: 4 February 2020
First Online: 26 February 2020
Ethics approval and consent to participate
: Since the study was wholly literature based, ethical approval was not required.
: Not applicable.
: The authors declare that they have no competing interests.
