No abstract available
Publication types
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Editorial
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Research Support, Non-U.S. Gov't
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Comment
MeSH terms
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Female
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Humans
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Male
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Pulmonary Disease, Chronic Obstructive / etiology*
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Vitamin D / analogs & derivatives*
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Vitamin D / blood
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Vitamin D Deficiency / complications*
Substances
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Vitamin D
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25-hydroxyvitamin D