Fretz, J. A., L. A. Zella, S. Kim, N. K. Shevde, and J. W. Pike. “1,25-Dihydroxyvitamin D3 Regulates the Expression of Low-Density Lipoprotein Receptor-Related Protein 5 via Deoxyribonucleic Acid Sequence Elements Located Downstream of the Start Site of Transcription.”. Mol Endocrinol., Vol. 20, no. 9, 2006, pp. 2215-30.