Cigarettes and pregnancy.
D000022:Abortion, Spontaneous / Q000209:etiology*; D001724:Birth Weight / Q000187:drug effects; D002675:Child, Preschool; D005260:Female; D005317:Fetal Growth Retardation / Q000209:etiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010922:Placenta Diseases / Q000209:etiology*; D011247:Pregnancy; D012907:Smoking / Q000150:complications*