Delon, Christine https://orcid.org/0000-0001-5163-1716
Brown, Katrina F.
Payne, Nick W. S.
Kotrotsios, Yannis
Vernon, Sally
Shelton, Jon
Article History
Received: 3 August 2021
Revised: 5 January 2022
Accepted: 25 January 2022
First Online: 2 March 2022
Competing interests
: The authors declare no competing interests.
: Research was carried out on de-identified data obtained from Public Health England via the Office for Data Release. No ethical approval was necessary as part of accessing these data.
: Not needed for this work.