Funding for this research was provided by:
Public Health Research Programme (NIHR-PHR: 16/122/35)
Received: 30 September 2021
Accepted: 4 October 2021
First Online: 19 October 2021
: Ethical approval has been granted by the Research Ethics Committee (REC), University College London, reference: 1538/002. Written and verbal consent is obtained from participants taking part in the study. Ethical approval was granted to record consent verbally when data is collected remotely due to COVID-19 restrictions.
: The authors declare that they have no competing interests.