1. Medical Faculty of the University of Berne, 3010 Bern, Switzerland
2. Department Klinische Forschung (DKF), University of Basel, 4001 Basel, Switzerland
3. Department of Radiology Kantonsspital Aarau, 5000 Aarau, Switzerland
4. Medical University Department of Medicine, Kantonsspital Aarau, 5000 Aarau, Switzerland
5. Division of Diabetology, Endocrinology, Nutritional Medicine & Metabolism, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland