1. Leipzig University Medical Center; IFB Adiposity Diseases; Leipzig Germany
2. Division of Endocrinology Diabetes and Metabolism; Beth Israel Deaconess Medical Center, Harvard Medical School; Boston Massachusetts USA
3. Coordination Centre for Clinical Studies; University of Leipzig; Leipzig Germany
4. KLAKS e.V.; Leipzig Germany
5. MVZ Labor Dr. Reising-Ackermann & Colleagues; Leipzig Germany
6. Pediatric Medical Center; Leipzig Germany
7. Section of Endocrinology Boston VA Healthcare System; Harvard Medical School; Boston Massachusetts USA