No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Cross-Cultural Comparison*
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Cross-Sectional Studies
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Educational Status
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Female
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Health Status
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Health Surveys
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Hospitalization / statistics & numerical data*
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Humans
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Iran
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Male
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Motivation
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Personal Satisfaction
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Sleep Initiation and Maintenance Disorders / epidemiology*
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Sleep Initiation and Maintenance Disorders / psychology
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Surveys and Questionnaires