Erratum
After publication of the original article [1] it came to the publishers attention that pre-existing diabetes had been omitted from the exclusion criteria in the manuscript. The paragraph on page 4 should read:
Exclusion criteria
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Women unable or unwilling to give informed consent; <15 + 0 weeks or >18 + 6 weeks’ gestation; essential hypertension requiring treatment either pre-pregnancy or in index pregnancy; pre-existing diabetes (Type 1 or Type 2); pre-existing renal disease; systemic lupus erythematosus; antiphospholipid syndrome; sickle cell disease; thalassemia; coeliac disease; thyroid disease; current psychosis; multiple pregnancy; currently prescribed metformin.
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