No abstract available
MeSH terms
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Anesthetics, Local / administration & dosage
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Humans
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Lumbosacral Region / diagnostic imaging
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Muscle, Skeletal / diagnostic imaging*
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Muscle, Skeletal / drug effects*
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Nerve Block / methods*
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Paraspinal Muscles / diagnostic imaging
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Paraspinal Muscles / drug effects
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Ultrasonography, Interventional