Funding
This study is funded by the National Institute for Health Research (NIHR) Programme Grants for Applied Research (project reference: RP-PG-1016–20010). Armitage is supported by NIHR Manchester Biomedical Research Centre and NIHR Greater Manchester Patient Safety Translational Research Centre. 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 funders had no role in study design, data collection, analysis or interpretation, decision to publish, or preparation of the manuscript.