1. Abdominal Center, Endocrinology and Diabetes, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
2. Folkhälsan Institute of Genetics, Folkhälsan Research Center, Biomedicum Helsinki, Finland
3. Abdominal Center, Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
4. Research Program for Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
5. National Institute for Health and Welfare, Helsinki, Finland
6. Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia