Sheridan, Eamonn; Wright, John; Corry, Peter; Oddie, Sam; Small, Neil; Parslow, Roger C
Ester Garne and Joan Morris are correct that the Born in Bradford birth cohort data for congenital anomalies do not include pregnancies that terminated before 28 weeks: the data we report refer to liveborn and stillborn infants only.1 We reported a protective effect of education on anomaly rates but we did not propose any theory to account for the finding because we had no further data that related to this observation.
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