Funding for this research was provided by:
Dunhill Medical Trust (RTF49/0114)
Article History
Received: 16 July 2019
Accepted: 15 October 2019
First Online: 6 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest
: The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health and Social Care.