Exploratory Notice In Order To Acquire Events Of Interest For The Supply Of Vertebral Surgery Systems For The Tethering Technique Type Reflect Or Equivalent, For The Ss Of Vertebral Surgery Of The Pediatric Orthopedia Of The V. Buzzi Of Isst Fatebenefratelli Sacco, For A Period Of 36 Months, Possibly Renewable For An Additional 36 Months.