Funding for this research was provided by:
Health Services and Delivery Research Programme (16/53/12)
Received: 11 October 2019
Accepted: 13 February 2020
First Online: 8 April 2020
Ethics approval and consent to participate
: Secondary research. Ethical approval is not required.
: Not applicable.
: Geoff Wong is the Joint Deputy Chair of the National Institute for Health Research Health Technology Assessment Programme Prioritisation Committee Panel A (Out of hospital). Mark Pearson is a member of the NIHR Health Services & Delivery Research (HS&DR) Funding Committee. The other authors declare that they have no competing interests.