1. Section of Specialized Endocrinology, Oslo University Hospital (OUS) , Postboks 4950 Nydalen, 0424 Oslo , Norway
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo (UIO) , Postboks 1171 Blindern, 0318 Oslo , Norway
3. Research Institute of Internal Medicine, Oslo University Hospital (OUS) , Postboks 4950 Nydalen, 0424 Oslo , Norway
4. Department of Endocrinology and Internal Medicine, Aarhus University Hospital (AUH) , Palle Juul Jensens Boulevard 99, 8200 Aarhus N , Denmark
5. Medical Research Laboratory, Department of Clinical Medicine, Aarhus University Hospital (AUH) , Palle Juul Jensens Boulevard 99, 8200 Aarhus N , Denmark
6. Department of Endocrinology and Internal Medicine, Aalborg University Hospital (AAUH) , Hobrovej 18-22, 9000 Aalborg , Denmark
7. Steno Diabetes Center North Jutland, Aalborg University Hospital , Søndre Skovvej 3E, 9000 Aalborg , Denmark
8. Department of Medical Genetics, University of Oslo, Oslo University Hospital , Kirkeveien 166, 0450 Oslo , Norway