“…According to the eligibility criteria, four studies were excluded ( Supplementary Table S3 ), and four RCTs were, finally, included for qualitative and quantitative analysis [ 17 , 18 , 19 , 20 ]. Supplementary Table S3 presents all excluded references and reasons for exclusion [ 21 , 22 , 23 , 24 ]. Figure 1 presents an overview of the selection process.…”