Affiliation: | 1.Institute for Clinical Diabetology, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany ;2.German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany ;3.Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany ;4.Helsinki Medical Imaging Centre, University of Helsinki, P.O. Box 340, Helsinki, Finland ; |