Aspirin use during early pregnancy and the risk of congenital abnormalities: A population-based case-control study

It is still controversial whether aspirin use during pregnancy increases the risk of certain congenital abnormalities (in particular, neural tube defects, gastroschisis, and cleft lip ± palate). We examined the risk of selected congenital abnormalities in a large case-control dataset from Hungary and found no increased risk of such congenital abnormalities.