Xu Jingyuan, Mavranezouli Ifigeneia, Kuznetsov Laura, Stephen Murphy M, Healy Eugene
National Guideline Alliance, Royal College of Obstetricians and Gynaecologists, London, UK
University of Manchester, Manchester, UK.
BMJ. 2021 Sep 20;374:n1800. doi: 10.1136/bmj.n1800.