Variants of the PPARG, IGF2BP2, CDKAL1, HHEX, and TCF7L2 Genes Confer Risk of Type 2 Diabetes Independently of BMI in the German KORA Studies - Herder, C.; Rathmann, W.; Strassburger, K.; Finner, H.; Grallert, H.; Huth, C.; Meisinger, C.; Gieger, C.; Martin, S.; Giani, G.; Scherbaum, W. A.; Wichmann, H.-E.; Illig, T. (Hormone and Metabolic Research, 2008)