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NORMAN, ANTHONY W.; ROTH, JÜRGEN; ORCI, LELIO . (1982).
The Vitamin D Endocrine System: Steroid Metabolism, Hormone Receptors, and Biological Response (Calcium Binding Proteins)*. Endocrine Reviews, 3(4), 331–366.
doi:10.1210/edrv-3-4-331
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