“…Thirteen studies [ 18 , 42 , 43 , 45 , 47 , 48 , 50 , 55 – 60 ] reported blood loss in a total number of 336 performed procedures with the RIA system. Of these 13 studies, five studies [ 47 , 48 , 50 , 56 , 58 ] reported the volume of blood lost, which resulted in a mean of 803.29 ml per case. Furthermore, five out of the 13 studies reported a drop in hemoglobin, resulting in a mean of 3.74 g/dl.…”