V. K. Wilson, D. K. Houston, L. Kilpatrick, J. Lovato, K. Yaffe, J. A. Cauley, T. B. Harris, E. M. Simonsick, H. N. Ayonayon, S. B. Kritchevsky, and K. M. Sink, «Health, Aging and Body Composition Study. Relationship between 25-Hydroxyvitamin D and Cognitive Function in Older Adults: The Health, Aging and Body Composition Study». Journal of the American Geriatrics Society 62, no. 4 (Apr. 2014): 636–641.
