Braxton Hicks vs. preterm labor.
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Duluth Family Practice Center, Minnesota.
D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature / Q000266:history* / Q000517:prevention & control; D011247:Pregnancy; D014481:United States; D014590:Uterine Contraction / Q000502:physiology*