“…We listed a detailed Risk of Bias assessment in Appendix 11 . There were seven RCTs at high risk of bias, 32 , 44 , 47 , 57 , 76 , 77 , 78 43 had some concerns regarding bias 25 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 42 , 43 , 45 , 46 , 48 , 50 , 52 , 54 , 56 , 58 , 69 , 70 , 71 , 73 , 74 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 and ten had low risk of bias. 31 , 33 , 41 , 49 , 51 , 53 , 55 , 72 , 99 , 100 …”