“…56 The bibliography is variable in this regard. Twenty-seven articles refer to the systematic use of this device, 6,14,15,17,20,22,25,26,30,33,35,36,[38][39][40][41]44,[46][47][48][49]51,54,[57][58][59][60] and a multicenter study reports that only one of the centers used it without performing a statistical analysis of what this measurement could indicate. 61…”