Primary Outcome(s)
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Breast milk concentration of vitamin D
[Time Frame: 3 months]
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Plasma 25(OH) vitamin D of infants at 6 months of age
[Time Frame: 6 months]
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Breast milk concentration of vitamin D
[Time Frame: 6 months]
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Plasma 25(OH)D concentrations of lactating women
[Time Frame: 6 months after enrollment]
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Clinical Assessment of Infants for Rickets
[Time Frame: 3 months]
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Plasma 25(OH)D concentrations of lactating women
[Time Frame: 1 year]
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Clinical Assessment of Infants for Rickets
[Time Frame: 12 months]
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Clinical Assessment of Infants for Rickets
[Time Frame: 6 months]
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Plasma 25(OH)D concentrations of lactating women
[Time Frame: 3 months after enrollment]
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Plasma 25(OH) vitamin D of 1-year-old infants
[Time Frame: 1 year]
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Breast milk concentration of vitamin D
[Time Frame: 1 year]
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