Influenza and neural-tube defects.
D000293:Adolescent; D000328:Adult; D002490:Central Nervous System / Q000002:abnormalities* / Q000196:embryology; D002648:Child; D000013:Congenital Abnormalities / Q000209:etiology; D004196:Disease Outbreaks / Q000453:epidemiology; D005260:Female; D006801:Humans; D007251:Influenza, Human / Q000150:complications* / Q000453:epidemiology; D008404:Massachusetts; D009518:New York; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious; D012237:Rhode Island; D013997:Time Factors