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Current vitamin D status in European and Middle East countries and strategies to prevent vitamin D deficiency: a position statement of the European Calcified Tissue Society in: European Journal of Endocrinology Volume
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 "Do You Need More Vitamin D In Winters? Expert Reveals; Know Daily Requirement And Food Sources")
Do You Need More Vitamin D In Winters? Expert Reveals; Know Daily Requirement And Food Sources
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Vitamin D: Benefits And Sources – Forbes Health
