1. Department of Nephrology and Kidney Transplantation, University Hospital of Patras, 26504 Patras, Greece
2. 1st Department of Pathology, National and Kapodistrian University of Athens Medical School, 34400 Athens, Greece
3. Institute of Pathology, RWTH University of Aachen, 52074 Aachen, Germany
4. Department of Nephrology, University Hospital of Heraklion, 71500 Heraklion, Greece