Funding
J.W., NIHR Doctoral Research Fellow, NIHR301793 is funded by the National Institute for Health and Care Research (NIHR) for this research project. The views expressed in this publication are those of the author(s) and not necessarily those of the NIHR, NHS or the UK Department of Health and Social Care. This work was additionally funded through the Royal College of Surgeons of England and Blond McIndoe Research Foundation One-Year Research Fellowship.D.P.-A. is funded through a NIHR Senior Research Fellowship (Grant number SRF-2018-11-ST2-004). The views expressed in this publication are those of the author(s) and not necessarily those of the NHS, the National Institute for Health and Care Research or the department of Health.