Neural-tube defects: an unrecognized epidemic.
D000757:Anencephaly / Q000453:epidemiology* / Q000266:history; D001900:Boston; D004196:Disease Outbreaks; D049672:History, 19th Century; D049673:History, 20th Century; D012237:Rhode Island; D016135:Spinal Dysraphism / Q000453:epidemiology* / Q000266:history