No abstract available
MeSH terms
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Analgesics / administration & dosage*
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Analgesics, Opioid / administration & dosage
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Fentanyl / administration & dosage
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Humans
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Infant, Newborn
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Infant, Newborn, Diseases / physiopathology*
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Infant, Premature, Diseases / physiopathology
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Morphine / administration & dosage
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Pain / drug therapy*
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Pain / physiopathology
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Pain Measurement
Substances
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Analgesics
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Analgesics, Opioid
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Morphine
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Fentanyl