1. Nephrology, IIS-Fundacion Jimenez Diaz-Universidad Autonoma de Madrid and Fundacion Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain
2. Nephrology, REDINREN, Madrid, Spain
3. Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
4. Department of Diabetes and Cardiovascular Science, University of the Highlands and Islands, Inverness, UK
5. Mosaiques diagnostics GmbH, Hannover, Germany