19-year incidence of neural tube defects in area under constant surveillance.
D000757:Anencephaly / Q000453:epidemiology; D004739:England; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008403:Mass Screening; D009436:Neural Tube Defects / Q000453:epidemiology* / Q000517:prevention & control; D011296:Prenatal Diagnosis; D016136:Spina Bifida Occulta / Q000453:epidemiology