Potential role of 25(OH)D insufficiency in the dysfunction of glycolipid metabolism and cognitive impairment in patients with T2DM oleh Hui-min Sun, Hui-min Sun, Hui-min Sun, Yue Yu, Yue Yu, Xin-ran Gao, Xin-ran Gao, Xin-ran Gao, Ya-dong Wei, Ya-dong Wei, Ya-dong Wei, Chuan-zong Qi, Chuan-zong Qi, Chuan-zong Qi, Meng-die Ma, Meng-die Ma, Meng-die Ma, Dan-dan Xu, Dan-dan Xu, Dan-dan Xu, Ya-yun Xu, Ya-yun Xu, Jin-fang Ge, Jin-fang Ge, Jin-fang Ge