Funding
ARC
This study is funded by the National Institute for Health Research (NIHR) Research for Patient Benefit Programme (PB-PG-0317–20024). The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care. The funder had no role in the design of the study, in the writing of this manuscript, or the decision to submit for publication. Paul T Seed is partly funded by Tommy’s (Registered charity no. 1060508) and by ARC South London (NIHR).