Okeahialam Nicola Adanna, Dworzynski Katharina, Jacklin Paul, McClurg Doreen
National Guideline Alliance, Royal College of Obstetricians and Gynaecologists, London, UK
Croydon University Hospital, UK.
BMJ. 2022 Jan 6;376:n3049. doi: 10.1136/bmj.n3049.