Received: 16 April 2021
Revised: 27 July 2021
Accepted: 24 August 2021
First Online: 16 September 2021
: Ethics approval for the use of anonymised electronic patient records in this study was granted from the Clinical Practice Research Datalink’s (CPRD) Independent Scientific Advisory (ISAC) Board (protocol 19_124R2A) on 11 July 2019.
: All authors have completed the Unified Competing Interest form (available on request from the corresponding author) and declare: SFM reports grants from National Institute for Health Research (NIHR) Academic Clinical Fellowship ACF-2015-23-501, during the conduct of the study; SJP reports grants from NIHR Policy Research Programme, conducted through the Policy Research Unit in Cancer Awareness, Screening and Early Diagnosis. PR-PRU-1217-21601, during the conduct of the study; WH reports grants from University of Exeter, during conduct of the study; remaining authors received no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous three years, no other relationships or activities that could appear to have influenced the submitted work.