Secular trends in the incidence of major malformations of the central nervous system reported from three Dublin Maternity Hospitals, 1900-1965.
D000757:Anencephaly / Q000453:epidemiology*; D006801:Humans; D006849:Hydrocephalus / Q000453:epidemiology*; D007231:Infant, Newborn; D007494:Ireland; D012044:Regression Analysis; D016135:Spinal Dysraphism / Q000453:epidemiology*