1. Department of Endocrinology, Diabetology and Clinical Nutrition, University of Zürich (USZ) and University of Zürich (UZH) , 8091 Zürich , Switzerland
2. Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität , 81377 Munich , Germany
3. The LOOP Zurich Medical Research Center , 8044 Zurich , Switzerland
4. Department of Internal Medicine, Division of Metabolism, Endocrinology and Diabetes, University of Michigan , Ann Arbor, MI 48109 , USA
5. Division of Endocrinology, Metabolism, and Nutrition, Mayo Clinic, Rochester , MN 55905 , USA
6. Joint appointment in Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester , MN 55905 , USA
7. Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg , 97080 Wuerzburg , Germany
8. Division of Endocrinology and Metabolism, University of Texas Southwestern Medical Center , Dallas, TX 75390-8857 , USA
9. European Society of Endocrinology , Bristol BS32 4QW , UK
10. Department of Clinical Epidemiology, Leiden University Medical Center , 2333 ZA Leiden , The Netherlands
11. Department of Clinical Science, University of Bergen , N-5021 Bergen , Norway
12. Department of Medicine, Haukeland University Hospital , N-5021 Bergen , Norway
13. Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham , Birmingham B15 2TT , UK
14. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners , Birmingham B15 2TT , UK
15. Department of Endocrinology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust , Birmingham B15 2TH , UK
16. NIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust , Birmingham B15 2TH , UK
17. Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School , Boston, MA 02115 , USA
18. Department of Neurological Surgery, Oregon Health & Sciences University , Portland, OR 97239-3098 , USA
19. Department of Endocrinology and Metabolism, Leiden University Medical Center , 2333 ZA Leiden , The Netherlands
20. Department of Clinical Epidemiology, Aarhus University , 8200 Aarhus , Denmark