Open Procedure, Pursuant To Art. 71 Of Legislative Decree No. 36/2023 And With The Award Criterion Of The Most Economically Advantageous Offer Referred To In Art. 108 Paragraph 1 Of The Aforementioned Decree, For The Five-Year Supply Of Reagents For The Mass Spectrometer For The Needs Of The U.O.C. Of Clinical And Molecular Pathology And The U.O.S.D. Of Endocrinological Diagnosis And Laboratory And Molecular Virology Of The A.O.U. Frederick Ii Of Naples