1. Obesity Research Group, Department of Clinical and Molecular Medicine, Faculty of Medicine Norwegian University of Science and Technology (NTNU) Trondheim Norway
2. Centre of Obesity and Innovation (ObeCe), Clinic of Surgery St. Olav University Hospital Trondheim Norway
3. Department of Public Health Nutrition at the Institute of Basic Medical Sciences, Faculty of Medicine University of Oslo (UiO) Oslo Norway
4. Library Section for Research Support, Data and Analysis Norwegian University of Science and Technology (NTNU) Trondheim Norway
5. Department of Public Health and Nursing Norwegian University of Science and Technology Trondheim Norway
6. Clinical Research Unit Central Norway St. Olavs Hospital Trondheim Norway
7. Department of Nutrition Sciences the University of Alabama at Birmingham (UAB) Birmingham Alabama USA