1. Deparment of Endocrinology Karolinska University Hospital Stockholm Sweden
2. Division of Endocrinology, Diabetes and Metabolism Ohio State University Columbus OH USA
3. Pediatric Endocrine Unit Massachusetts General Hospital and Harvard Medical School Boston MA USA
4. Department of Endocrinology and Internal Medicine Aarhus University Hospital Aarhus Denmark
5. Centre for Endocrinology, Diabetes, and Metabolism Queen Elizabeth Hospital Birmingham UK
6. Division of Endocrinology, Diabetes, Metabolism, and Nutrition Mayo Clinic Rochester MN USA