Funding for this research was provided by:
National Institute for Health Research (NIHR–RMFI–2016–07–25)
Article History
Received: 10 January 2019
Accepted: 16 July 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: SG is the Deputy Director of the NIHR HTA programme and Chair of the NIHR HTA commissioning committee. EH and SJ declare that they have no competing interests.