BMJ · 1978 · 13 citations · 0 references
MedicineEndocrinologyObstetricsMaternal-fetal MedicineObstetric ComplicationsReproductive EndocrinologyPregnancyPregnancy EndocrinologyThyroid DisordersThyroid EndocrinologyThyroid ImagingThyroid UltrasoundHyperthyroidism In PregnancyThyroid Dysfunction In PregnancyThyroid Function In Pregnancy