1. HUNT Research Centre, Department of Public Health and Nursing Faculty of Medicine and Health Sciences, NTNU, Norwegian University of Science and Technology Levanger Norway
2. Department of Endocrinology Clinic of Medicine, St. Olavs Hospital, Trondheim University Hospital Trondheim Norway
3. K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing Faculty of Medicine and Health Sciences, NTNU, Norwegian University of Science and Technology Trondheim Norway
4. Department of Clinical and Molecular Medicine Faculty of Medicine and Health Sciences, NTNU, Norwegian University of Science and Technology Trondheim Norway