No abstract available
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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25-Hydroxyvitamin D 2
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Breast Feeding*
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Ergocalciferols / analogs & derivatives*
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Ergocalciferols / blood
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Humans
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Infant
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Infant, Newborn
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Seasons*
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Sunlight*
Substances
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Ergocalciferols
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25-Hydroxyvitamin D 2