No abstract available
MeSH terms
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Adult
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Alcohol Drinking
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Alcoholism / epidemiology
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Amphetamine
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Educational Status
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Follow-Up Studies
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Humans
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Hypnotics and Sedatives*
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Intelligence
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Male
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Middle Aged
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Physicians*
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Prospective Studies
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Psychological Tests
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Smoking
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Social Class
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Substance-Related Disorders / epidemiology
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Tranquilizing Agents*
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United States
Substances
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Hypnotics and Sedatives
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Tranquilizing Agents
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Amphetamine