No abstract available
MeSH terms
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Administration, Inhalation
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Analgesics, Non-Narcotic / administration & dosage*
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Child
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Child, Preschool
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Drug Combinations
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Female
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Follow-Up Studies
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Humans
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Male
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Nitrous Oxide / administration & dosage*
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Oxygen / administration & dosage*
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Pain / prevention & control*
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Pain Measurement
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Prospective Studies
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Spinal Puncture / methods*
Substances
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Analgesics, Non-Narcotic
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Drug Combinations
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Nitrous Oxide
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Oxygen