“…Moreover, several data have confirmed the safety and the almost absolute absence of toxic and side effects, especially in severe case of DES or in PED (except those related to an improper handling). A critical point of these published studies concerns the number of patients enrolled which are recurrently less than 100 [ 4 , 13 , 16 , 35 , 38 , 39 , 43 , 84 , 85 , 95 , 96 ] and the almost absence of long follow-up studies [ 69 ]. On the other hand, the evaluation of the ongoing studies on this therapy showed that the newer fields of clinical research are focusing on alternatives to SE like CBS.…”