1. Department of Clinical Science; University of Bergen; Bergen Norway
2. Department of Medicine; Haukeland University Hospital; Bergen Norway
3. Department of Internal Medicine I; Endocrine and Diabetes Unit; University Hospital Würzburg; Würzburg Germany
4. Centre for Endocrinology, Diabetes and Metabolism; School of Clinical and Experimental Medicine; University of Birmingham; Birmingham UK
5. Department of Medicine 1; Goethe-University Hospital; Frankfurt am Main Germany
6. Department of Molecular Medicine and Surgery; Karolinska Institute; Stockholm Sweden
7. Endocrine Unit; Department of Medicine (DIMED); University of Padova; Padova Italy
8. Department of Internal Medicine; Section of Internal Medicine and Endocrine and Metabolic Sciences; University of Perugia; Perugia Italy
9. Institute of Genetic Medicine; Newcastle University; Newcastle upon Tyne UK
10. Department of Endocrinology; Medical Center of Postgraduate Education; Warsaw Poland
11. Department of Clinical Sciences; Uppsala University; Uppsala Sweden