Preserved incretin effect in type 1 diabetic patients with end-stage nephropathy treated by combined heterotopic pancreas and kidney transplantation. - Nauck,M.A.; Büsing,M.; Ørskov,C.; Siegel,E.G.; Talartschik,J.; Baartz,A.; Baartz,T.; Hopt,U.T.; Becker,H-D.; Creutzfeldt,W. (Acta Diabetol, 1993)