No abstract available
MeSH terms
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Abdominal Pain / diagnosis
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Abdominal Pain / etiology
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Abdominal Pain / prevention & control*
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Adolescent
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Age Factors
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Analgesics / therapeutic use
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Appendectomy / adverse effects*
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Child
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Female
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Humans
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Male
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Nerve Block / methods*
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Pain Measurement
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Pain, Postoperative / diagnosis
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Pain, Postoperative / etiology
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Pain, Postoperative / prevention & control*
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Retrospective Studies
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Spain
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Treatment Outcome
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Ultrasonography, Interventional*