Luminita Voroneanu1, Adrian Covic2. 1. From the Nephrology Department, Dialysis and Renal Transplant Center, "Dr C.I. Parhon" University Hospital, Gr. T. Popa University of Medicine and Pharmacy, Iasi, Romania. lumivoro@yahoo.com. 2. From the Nephrology Department, Dialysis and Renal Transplant Center, "Dr C.I. Parhon" University Hospital, Gr. T. Popa University of Medicine and Pharmacy, Iasi, Romania.