“…Figure 1 shows the results of the search and article selection. The final set consisted of 27 eligible studies , including 6 articles conducted in Germany [23,32,34,39,40,42]; 5 articles in France [25,26,31,37,41]; 2 articles in Switzerland [36,45]; 2 articles in Egypt [20,27]; 1 from each of the following countries: Denmark [46], Iceland [44], Korea [33], USA [35], Poland [38], Sweden [43], Spain [21], The Netherlands [29], and Turkey [22]; and 2 international articles [24,28]. The total number of participants was 14,139.…”