“…In total, 14 reports were identified as potentially eligible and underwent a full text review. Of these, six [ 26 , 27 , 28 , 29 , 30 , 31 ] were excluded, mainly because the outcomes of interest in this review were not measured or because the types of intervention or study aims were not eligible for our study question ( Table S1 ). Overall, six studies [ 32 , 33 , 34 , 35 , 36 , 37 ] were included in our systematic review, to which two follow-up publications [ 38 , 39 ] were added for the meta-analysis.…”