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8 Bringhurst FR, et.al., “Bone and Mineral Metabolism in Health and Disease”. Chapter 23 of “Harrison’s Endocrinology”, J. Larry Jameson, editor, McGraw-Hill Medical Publishing Division, copyright 2006
9 Dietary Supplemental Fact Sheet: Vitamin D. Office of Dietary Supplements. National Institutes of Health. Updated 11/13/2009. Accessed 08/17/2010.
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