“…Flow of studies through the stages of identification, screening, eligibility, and final inclusion is shown in Figure 1 . Fourteen randomised controlled studies were selected for inclusion in this systematic review [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. Two of the papers [ 41 , 47 ] reported different outcomes from one trial and for the purpose of this manuscript are referred to as one paper.…”