1. Clinical Endocrinology (E.B.-F., M.Q.), Charité Campus Mitte, Charité University Medicine Berlin, 10117 Berlin, Germany
2. Medizinische Klinik Innenstadt and Institut für Prophylaxe und Epidemiologie der Kreislaufkrankheiten (M.R., R.L., C.S., F.B., M.B., S.E.), Ludwig-Maximilians-University Munich, 80336 München, Germany
3. Department of Nephrology (L.C.R.), University Hospital Düsseldorf, 40225 Düsseldorf, Germany
4. Department of Internal Medicine I (S.H., B.A.), Endocrine and Diabetes Unit, University of Wuerzburg, 97070 Wuerzburg, Germany
5. Endokrinologikum (S.D.), 10117 Berlin, Germany
6. Department of Medicine II (J.S.), Albert-Ludwigs-University, 79085 Freiburg, Germany