No abstract available
MeSH terms
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Adaptation, Physiological
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Adult
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Delta Rhythm
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Female
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Humans
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Male
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Middle Aged
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Occupational Diseases / epidemiology*
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Railroads*
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Reaction Time / physiology
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Sleep Stages
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Sleep Wake Disorders / epidemiology*
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Sleep Wake Disorders / etiology
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Sleep, REM / physiology
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Stress, Psychological / complications*
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Stress, Psychological / epidemiology