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Vitamin D supplementation and immune-related markers: an update from nutrigenetic and nutrigenomic studies | British Journal of Nutrition | Cambridge Core
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Vitamin D: 15 ng/mL
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Is Your Vitamin D Level Too High? - GrassrootsHealth
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Vitamin D | The Nutrition Source | Harvard T.H. Chan School of Public Health
The 7 Healthiest Foods High in Vitamin D
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