1. From the Clinical Department, German Diabetes Research Institute at the Heinrich-Heine-University, Düsseldorf, Germany; the Diabetes Center, Athens Medical School, Hippokration Hospital, Athens, Greece; University Hospital of Gent, Gent, Belgium; the Division of Endocrinology and Metabolic Disease, University of Verona, Verona, Italy; and the Department of Epidemiology and Public Health, Universi