1. Institute of Public Health and Clinical Nutrition; University of Eastern Finland; Kuopio Finland
2. Department of Surgery; University of Eastern Finland and Kuopio University Hospital; Finland
3. Department of Human Genetics; David Geffen School of Medicine at UCLA; Los Angeles California USA
4. Institute of Biomedicine and Biocenter of Oulu; University of Oulu; Finland
5. Medical Research Center Oulu & Oulu University Hospital; Finland
6. Department of Gastroenterology and Metabolism; Poznan University of Medical Sciences; Poland
7. Institute of Clinical Medicine, Internal Medicine; University of Eastern Finland and Kuopio University Hospital; Finland
8. Molecular Biology Institute at UCLA; Los Angeles California USA
9. Clinical Nutrition and Obesity Center; Kuopio University Hospital; Finland