1. Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
2. Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
3. Department of Noncommunicable Diseases, Norwegian Institute of Public Health, Oslo, Norway
4. Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
5. Department of Transplantation Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway