Open Tender Procedure Pursuant To Art. 71 Legislative Decree 36/2023 Carried Out Through The Sintel Telematic Platform, For The Assignment Of Various Services For The Management Of A "Specific Pathogen Free (Spf") Structure At The S.D.D. Animal Facility Of The Irccs Aom Metropolitan Hospital Company For The Duration Of 36 Months Possibly Renewable For 12 Months