Expression Of Interest Aimed At Direct Awarding, Pursuant To Art.50, Paragraph 1, Lett. B) Of The Legislative Decree. N. 36/2023, Of The Supply Of Covers For Bags For The Cryopreservation Of Stem Cells Required By The Irccs Ca' Granda Ospedale Maggiore Policlinico Foundation, For The Period Of 36 Months