Haemoglobin levels in early pregnancy and severe maternal morbidity: population-based cohort study.
J G RayAjf DavidsonHoward BergerN DayanA L ParkPublished in: BJOG : an international journal of obstetrics and gynaecology (2020)
Women with low haemoglobin in early pregnancy are at higher future risk of morbidity, death and blood transfusion.