“…Seventeen studies had a high risk of bias ( 18 , 20 , 22 , 23 , 30 , 33 , 35 , 37 , 38 , 42 – 44 , 46 , 54 , 55 , 58 , 59 ), and one-quarter of the studies (25%) were at “unclear risk of bias” ( 24 , 25 , 27 , 29 , 31 , 32 , 36 , 45 , 48 , 50 , 51 ), mostly due to deviations from the intended interventions and selection of the reported results. The remaining 16 studies were at low risk of bias ( 14 , 19 , 21 , 26 , 28 , 34 , 39 – 41 , 47 , 49 , 52 , 53 , 56 , 57 , 60 ), with all assessed domains in these studies being at low risk.…”