1. Medical University Department, Division of General Internal and Emergency Medicine, Kantonsspital Aarau , CH-5001 Aarau , Switzerland
2. Department for Doctoral Degrees, Medical Faculty of the University Basel , CH-4001 Basel , Switzerland
3. Department of Health Professions, Bern University of Applied Sciences , CH-3010 Bern , Switzerland
4. Faculty of Life Sciences, University of Vienna , AT-1010 Vienna , Austria
5. Division of Diabetology, Endocrinology, Nutritional Medicine, and Metabolism, Inselspital Bern, Bern University Hospital, University of Bern , CH-3010 Bern , Switzerland