Funding for this research was provided by:
National Institute for Health Research (Applied Research Collaboration for Greater Manchester, PR-PRU-1217-20801, PR-R17-0916-21001)
Medical Research Council (MR/T027517/1)
NIHR School for Primary Care Research (SPCR-2014-10043)
Received: 16 November 2020
Accepted: 17 February 2021
First Online: 5 March 2021
: Not applicable
: The corresponding author had full access to all of the data and the final responsibility to submit for publication. The corresponding author received consent to publish from NHS, the NIHR, the Department of Health & Social Care, Public Health England or the Care Quality Commission.
: The authors declare that they have no competing interests.