No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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Ambulatory Care / statistics & numerical data*
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Child
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Data Collection
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Demography
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Diagnosis
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Disease / classification
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Female
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Health Care Surveys*
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Humans
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Male
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Medicine / statistics & numerical data*
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Middle Aged
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Office Visits / statistics & numerical data*
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Specialization*
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United States