A study of seasonal and secular trends in incidence of stillbirths and spontaneous abortions in Sweden.
D000022:Abortion, Spontaneous / Q000453:epidemiology*; D000293:Adolescent; D000328:Adult; D001723:Birth Rate; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D006801:Humans; D008393:Marriage; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D012189:Retrospective Studies; D012621:Seasons; D013548:Sweden