Dipeptidyl peptidase 4 is a novel adipokine potentially linking obesity to the metabolic syndrome - Lamers, D; Famulla, S; Wronkowitz, N; Hartwig, S; Lehr, S; Ouwens, D M; Eckardt, K; Kaufman, J M; Ryden, M; Muller, S; Hanisch, F G; Ruige, J; Arner, P; Sell, H; Eckel, J (Diabetes, 2011)