1. Department of Nuclear Medicine and PET Centre, Aarhus University Hospital, Denmark
2. NNF Center for Basic Metabolic Research and Department of Medical Sciences, University of Copenhagen, Denmark
3. Department of Neurology, Aarhus University Hospital, Denmark
4. Department of Hepatology and Gastroenterology, Aarhus University Hospital, Denmark
5. Medical Research Laboratory, Department of Clinical Medicine, Health, Aarhus University, Denmark and Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Denmark