National Institute for Health and Care Excellence. Hypertension in pregnancy: diagnosis and management.NICE, 2010.
Li DK, Yang C, Andrade S, Tavares V, Ferber JR. Maternal exposure to angiotensin converting enzyme inhibitors in the first trimester and risk of malformations in offspring: a retrospective cohort study. BMJ2011;343:d5931. doi:10.1136/bmj.d5931 pmid:22010128.