No abstract available
MeSH terms
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Administration, Intranasal
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Attention Deficit Disorder with Hyperactivity / drug therapy*
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Central Nervous System Stimulants / administration & dosage*
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Humans
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Injections, Intravenous
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Methylphenidate / administration & dosage*
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Students / statistics & numerical data*
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Substance-Related Disorders / epidemiology*
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Universities / statistics & numerical data*
Substances
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Central Nervous System Stimulants
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Methylphenidate