Anencephaly--survey of 60 cases.
D000328:Adult; D000757:Anencephaly / Q000150:complications / Q000453:epidemiology*; D001724:Birth Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010414:Pennsylvania; D006831:Polyhydramnios / Q000150:complications; D011247:Pregnancy; D012621:Seasons; D012744:Sex Ratio