What do regional variations in the rates of hospitalization of children really mean?
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D002648:Child; D002662:Child Health Services / Q000706:statistics & numerical data; D006760:Hospitalization / Q000639:trends*; D006761:Hospitals / Q000706:statistics & numerical data*; D006786:Hospitals, Urban / Q000706:statistics & numerical data*; D006801:Humans; D012959:Socioeconomic Factors; D014481:United States