Negotiated Procedure Without Notice, Pursuant To Art. 76, Paragraph 2, Letter. B), N. 2 Of Legislative Decree No. 36/2023 For The Assignment Of The Three-Year Supply Of "Materials For The Execution Of Continuous Hemodialysis Treatments In Acute Patients" For The Operation Of Dialysis Equipment Supplied To The U.O.C. Of University Nephrology, Dialysis And Transplantation Of This A.O.U.C. Bari Polyclinic.