Letter: Anencephaly, subfertility, and abortion.
D000022:Abortion, Spontaneous / Q000453:epidemiology; D000328:Adult; D000757:Anencephaly / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007086:Illegitimacy; D007246:Infertility / Q000150:complications; D008297:Male; D008423:Maternal Age; D011247:Pregnancy; D012923:Social Class