Epidemiologic aspects of neural tube defects.
D000757:Anencephaly / Q000453:epidemiology; D001827:Body Height; D002140:California; D004196:Disease Outbreaks; D004200:Diseases in Twins; D004812:Epidemiologic Methods; D005006:Ethnicity; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D009436:Neural Tube Defects / Q000453:epidemiology* / Q000209:etiology; D010298:Parity; D011247:Pregnancy; D044469:Racial Groups; D012737:Sex Factors; D012959:Socioeconomic Factors; D016136:Spina Bifida Occulta / Q000453:epidemiology; D006113:United Kingdom