Khin May Oo, Bromham Nathan, Harrison Mark, Eadon Hilary
National Guideline Alliance, Royal College of Obstetricians and Gynaecologists, London NW1 4RG, UK.
Mount Vernon Cancer Centre, Northwood, Middlesex HA6 2RN, UK.
BMJ. 2018 Jan 29;360:k213. doi: 10.1136/bmj.k213.