No abstract available
MeSH terms
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Analgesics, Opioid / supply & distribution
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Analgesics, Opioid / therapeutic use
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Health Care Surveys / history
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Health Care Surveys / methods
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History, 20th Century
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History, 21st Century
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Humans
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Japan
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Longitudinal Studies
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Neoplasms / complications*
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Nerve Block / methods
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Pain / drug therapy
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Pain / etiology*
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Pain Management*
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Practice Guidelines as Topic / standards