Circulating 25-hydroxyvitamin D is associated with insulin resistance cross-sectionally but not longitudinally in older adults: The Cardiovascular Health Study.

Metabolism 2013;62:1788-94

Danziger J, Biggs ML, Niemi M, Ix JH, Kizer JR, Djoussé L, de Boer IH, Siscovick DS, Kestenbaum B, Mukamal KJ