Harrison Siân, Alderdice Fiona, Quigley Maria A
NIHR Policy Research Unit in Maternal and Neonatal Health and Care, National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Old Road Campus Headington, Oxford, OX3 7LF, UK.
BMC Med Res Methodol. 2023 Jan 28;23(1):28. doi: 10.1186/s12874-023-01852-5.