Negotiated Procedure Without Publication Of A Notice, Pursuant To Art. 50, Paragraph 1, Letter B) Of The Legislative Decree. 31 March 2023, N. 36, For The Rental Supply Of Dynamic Air Anti-Decubitus Mattresses For Neonatal And Pediatric Patients At High And Very High Risk, For 12 Months, Required At The P.O. O.I.R.M. Of The A.O.U. City Of Health And Science Of Turin