title: Reply.
authors.affiliation: Department of Nephrology, Dialysis and Renal Transplantation.
authors.forename: Simeone
authors.initials: S
authors.lastname: Andrulli
authors.affiliation: Radiology Unit, A. Manzoni Hospital, Lecco , Italy.
authors.forename: Alberto
authors.initials: A
authors.lastname: Turrin
authors.affiliation: Department of Nephrology, Dialysis and Renal Transplantation.
authors.forename: Maria Carla
authors.initials: MC
authors.lastname: Bigi