1. Department of Behavioural Medicine, Faculty of Medicine Institute of Basic Medical Sciences, University of Oslo Oslo Norway
2. Department of Endocrinology, Obesity and Nutrition Vestfold Hospital Trust Tønsberg Norway
3. Department of Biological and Medical Psychology, Faculty of Psychology University of Bergen Bergen Norway
4. Institute for Neuroscience and Physiology The Sahlgrenska Academy at the University of Gothenburg Gothenburg Sweden
5. Hormone Laboratory, Department of Medical Biochemistry and Biochemical Endocrinology and Metabolism Research Group Oslo University Hospital Oslo Norway
6. Department of Nutrition Institute of Basic Medical Sciences, University of Oslo Oslo Norway