No abstract available
MeSH terms
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Anesthesia, Conduction / adverse effects*
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Anesthesia, Conduction / methods*
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Anesthesia, Spinal / adverse effects
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Anesthesia, Spinal / methods
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Anesthetics, Local / adverse effects*
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Humans
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Nerve Block / adverse effects*
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Nerve Block / methods*
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Treatment Failure
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Ultrasonography, Interventional