Reproductive history in the mothers of anencephalics.
D000328:Adult; D000757:Anencephaly / Q000209:etiology* / Q000401:mortality; D002170:Canada; D005260:Female; D005313:Fetal Death; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D008423:Maternal Age; D010298:Parity; D011247:Pregnancy; D012306:Risk