1. Department of Infectious Diseases, Inflammation Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
2. Department of Clinical Chemistry, University of Jyväskylä, Jyväskylä, Finland.
3. Department of Gastroenterology, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
4. Department of Radiology, Helsinki Medical Imaging Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
5. Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
6. Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
7. Department of Internal Medicine, Central Hospital of Päijät-Häme, Lahti, Finland.
8. Obesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
9. Obesity Center, Abdominal Center, Endocrinology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.