No abstract available
MeSH terms
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Barbiturates / metabolism
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Barbiturates / urine*
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Caffeine / metabolism
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Caffeine / urine*
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Chromatography, Gas*
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Female
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Fetus / drug effects*
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Humans
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Infant, Newborn
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Mass Spectrometry*
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Maternal-Fetal Exchange*
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Meperidine / metabolism
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Meperidine / urine*
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Phenobarbital / urine
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Pregnancy
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Secobarbital / urine
Substances
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Barbiturates
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Secobarbital
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Caffeine
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Meperidine
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Phenobarbital