“…Some authors suggested that LA should be only performed in high volume referral centers. Twelve studies reported a total of 89 conversions from MIS to an open approach [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ]. Conversely, eight further studies [ 38 , 46 , 47 , 49 , 50 , 51 , 52 , 53 ] confirmed OA as the standard operative technique for ACC.…”