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Vitamin D & Insulin Resistance | ADA
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Vitamin D Deficiency and Related Disorders: Practice Essentials, Background, Pathophysiology
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Vitamin D: Production, Metabolism and Mechanisms of Action - Endotext - NCBI Bookshelf
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Vitamin D: Health Benefits, Sources & Signs of Deficiency
Amazon.com: Nature Made Vitamin D3 1000 IU (25 mcg) Softgel, Dietary Supplement for Bone, Teeth, Muscle and Immune Health Support, 300 Day Supply,300 Count (Pack of 1) : Health & Household
Vitamin D | The Nutrition Source | Harvard T.H. Chan School of Public Health