Vitamin D insufficiency and abnormal hemoglobin a1c in black and white older persons.
Kositsawat J, Kuchel GA, Tooze JA, Houston DK, Cauley JA, Kritchevsky SB, Strotmeyer ES, Kanaya AM, Harris TB, Johnson KC, Barry LC. Vitamin D insufficiency and abnormal hemoglobin a1c in black and white older persons. J Gerontol A Biol Sci Med Sci. 2015 Apr; 70(4):525-31.