Negotiated Procedure To Be Initiated Pursuant To The Combined Provisions Of Articles 50 And 76 Co.4 Let. A) Legislative Decree No. 36/2023 And Subsequent Amendments, For The Supply Of "Diagnostic Material" Needed By The U.O.C. Of University Rheumatology For The Finalized Research Project – Rf-2021-12374986, Accounting Key Ric_Fin-B95E22000770001-01.