“…in a real environment in 11 cases : 10 in the operating theatre 33,35,44,58,61,65,66,[68][69][70] , 1 in a neurosurgery department 33 , and 4 in consultation 44,58,61,67 , -in a simulated environment in 9 cases 54,56,57,59,60,[62][63][64]71 , -during theoretical teaching in 1 case 43 .…”