Leptin suppression of insulin secretion and gene expression in human pancreatic islets: implications for the development of adipogenic diabetes mellitus. - Seufert,J.; Kieffer,T.J.; Leech,C.A.; Holz,G.G.; Moritz,W.; Ricordi,C.; Habener,J.F. (J Clin Endocrinol Metab, 1999)