“…The incidence of AEs was calculated in 24 RCTs [ 18 , 25 , 45 – 50 , 53 , 54 , 57 , 62 , 64 , 66 , 71 , 76 , 78 , 81 – 83 , 85 , 87 , 90 , 92 ], 13 [ 25 , 45 , 46 , 48 , 53 , 54 , 57 , 62 , 66 , 71 , 76 , 87 , 90 ] of which reported the occurrence of AEs (Additional file 27 ). The difference in the incidence of AEs between the experimental and control groups in each study was not statistically significant (P > 0.05).…”