No abstract available
MeSH terms
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Abdomen, Acute / diagnosis
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Abdomen, Acute / drug therapy*
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Abdomen, Acute / surgery
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Analgesics / therapeutic use
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Analgesics, Opioid / therapeutic use*
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Double-Blind Method
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Emergencies
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Ethics, Medical
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Humans
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Morphine / therapeutic use*
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Placebos
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Prospective Studies
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Randomized Controlled Trials as Topic
Substances
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Analgesics
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Analgesics, Opioid
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Placebos
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Morphine