Why the study?
Does twin gestation increase the rate of congenital cardiovascular anomalies compared to singleton gestation?
Does twin gestation increase the rate of congenital cardiovascular anomalies compared to singleton gestation?
Twin gestation is associated with a higher rate of congenital cardiovascular anomalies compared to singletons, primarily driven by anomalies of the circulatory system in like-sex twins.
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Twin gestations may merit enhanced anomaly surveillance; leaves open zygosity-specific mechanisms in observational data.
Little et al. (1989) studied this question.
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