“…We selected 27 studies after reviewing the full text of 134 studies; the remaining 107 studies did not meet the selection criteria. The following groups of studies were derived from the same research and hence, are considered as one study: 1) Balcazar, Rosenthal et al [23], Balcazar, de Heer et al [24], and Balcazar, Wise et al [25]; 2) Brewer, Balls-Berry et al [26] and Brewer, Morrison et al [27]; 3) Brewer, Hayes, Caron et al [28] and Brewer, Hayes, Jenkins et al [29]; and 4) Ralston, Lemacks et al [30], Ralston, Young-Clark et al [31], and Ralston, Wickrama et al [32]. Finally, the number of studies included in the review was 21.…”