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MLA Citation
Laura A Graeff-Armas et al.. “Supplemental 25-Hydroxycholecalciferol Is More Effective than Cholecalciferol in Raising Serum 25-Hydroxyvitamin D Concentrations in Older Adults.” Journal of nutrition, vol. 150, no. 1, 2020, pp. 73–81. http://access.bl.uk/ark:/81055/vdc_100128200788.0x000060