1. Department of Nephrology, Instituto de Investigación Hospital 12 de Octubre (imas12) , Madrid , Spain
2. Department of Nephrology and Dialysis, ASST Lariana , Como , Italy
3. Department of Medicine, Complutense University , Madrid , Spain
4. Department of Nephrology and Rheumatology and Department of Cardiology, RWTH University Hospital Aachen , Aachen , Germany
5. Renal Research Institute , NY , USA
6. Institute of Molecular Biology and Genetics, (Biogem), Ariano Irpino , Italy
7. Associazione Ipertensione Nefrologia Trapianto Renale (IPNET), c/o Nefrologia, Grande Ospedale Metropolitano , Reggio Calabria, Italy