1. Diabetes Complications Research Centre Conway Institute of Biomolecular and Biomedical Research, School of Medicine, University College Dublin Dublin Ireland
2. Department of Nephrology St. Vincent's University Hospital Dublin Ireland
3. Department of Clinical Chemistry St. Vincent's University Hospital Dublin Ireland
4. Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden
5. Division of Investigative Science Imperial College London London UK