No abstract available
MeSH terms
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Buprenorphine / pharmacology*
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Double-Blind Method
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Humans
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Hydromorphone / pharmacology
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Male
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Methadone*
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Naloxone / pharmacology
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Opioid-Related Disorders / physiopathology*
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Pupil / drug effects
Substances
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Naloxone
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Buprenorphine
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Hydromorphone
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Methadone