Lewis Sarah J, Munro Alasdair P S, Smith George Davey, Pollock Allyson M
MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK.
NIHR Southampton Clinical Research Facility and Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
BMJ. 2021 Feb 23;372:n521. doi: 10.1136/bmj.n521.