1. Department of Endocrinology, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
2. Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
3. AstraZeneca Research and Development, 43183 Mölndal, Sweden
4. Department of Mathematical Sciences, Chalmers University of Technology, 41296 Gothenburg, Sweden
5. Department of Pathology and Genetics, Biomedicine, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
6. Division of Endocrinology, Department of Medicine, University of Cape Town, 7925 Cape Town, South Africa