Impaired glucagon-like peptide-1-induced insulin secretion in carriers of transcription factor 7-like 2 (TCF7L2) gene polymorphisms. - Schäfer,SA.; Tschritter,O.; Machicao,F.; Thamer,C.; Stefan,N.; Gallwitz,B.; Holst,JJ.; Dekker,JM.; T'hart,LM.; Nijpels,G.; Haeften,TW van.; Häring,HU.; et al. (Diabetologia, 2007)