1. Department of Nutrition; Institute of Basic Medical Science; University of Oslo; Oslo Norway
2. Department of Endocrinology, Morbid Obesity and Preventive Medicine; Faculty of Medicine; Oslo University Hospital; University of Oslo; Oslo Norway
3. Norwegian School of Sport Sciences; Oslo Norway
4. The Intervention Centre; Oslo University Hospital; Oslo Norway
5. Department of Anatomy; Institute of Basic Medical Science; University of Oslo; Oslo Norway