Letter: Anencephalus and legitimacy.
D000028:Abortion, Induced; D000293:Adolescent; D000328:Adult; D000757:Anencephaly / Q000453:epidemiology* / Q000401:mortality; D002170:Canada; D005260:Female; D005298:Fertility; D005313:Fetal Death; D006801:Humans; D007086:Illegitimacy; D007226:Infant Mortality; D008423:Maternal Age; D010298:Parity; D011247:Pregnancy