MeSH terms
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Adolescent
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Analgesics, Opioid / administration & dosage*
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Analgesics, Opioid / economics
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Child
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Child, Preschool
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Cohort Studies
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Female
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Humans
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Insurance, Health / economics
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Insurance, Health / trends*
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Low Back Pain / diagnosis
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Low Back Pain / drug therapy*
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Low Back Pain / economics
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Male
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Practice Patterns, Physicians' / economics
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Practice Patterns, Physicians' / trends*
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Retrospective Studies