Comparison of insulin resistance and b-cell dysfunction between the young and the elderly in normal glucose tolerance and prediabetes population: A prospective study - Chen, G; Shi, L; Cai, L; Lin, W; Huang, H; Liang, J; Li, L; Lin, L; Tang, K; Chen, L; Lu, J; Bi, Y; Wang, W; Ning, G; Wen, J (Horm Metab Res, 2017)