1. Abdominal Center Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
2. Finnish Registry for Kidney Diseases, Helsinki, Finland
3. Folkhälsan Institute of Genetics, Folkhälsan Research Center Biomedicum Helsinki, Helsinki, Finland
4. Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
5. Department of Health and Social Care Systems, National Institute for Health and Welfare, Helsinki, Finland
6. Centre of Medicine, Kuopio University Hospital, Kuopio, Finland
7. Department of Social Research, Centre for Research Methods, University of Helsinki, Helsinki, Finland
8. Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland