Comparisons of secular and seasonal variations in the incidence of anencephalus in Belfast and four Scottish cities, 1956-66.
D000757:Anencephaly / Q000453:epidemiology*; D002980:Climate; D005260:Female; D005313:Fetal Death; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D009660:Northern Ireland; D011247:Pregnancy; D011336:Probability; D012606:Scotland; D012621:Seasons; D013696:Temperature; D014887:Weather