No abstract available
MeSH terms
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Aged
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Algorithms
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Decision Trees
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Diagnosis, Differential
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Diagnostic Imaging
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Emergency Medical Services / methods*
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Female
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Headache Disorders, Primary / diagnosis*
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Headache Disorders, Primary / physiopathology*
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Headache Disorders, Primary / therapy
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Humans
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Morphine / administration & dosage*
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Morphine / adverse effects
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Narcotics / administration & dosage*
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Narcotics / adverse effects
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Recurrence
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Treatment Outcome