1 Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy; Nephrology, Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy. Electronic address: gaetano.alfano@unimore.it.
2 Nephrology, Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy.
3 Clinic of Infectious Diseases, University Hospital of Modena, Modena, Italy.
4 Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy; Nephrology, Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy.