“…Apart from Osuagwu et al’s study which recruited participants from multiple countries in Sub-Saharan Africa, all the remaining studies involved a single country. Grouped under the continent of study, Asia dominated with 8 studies [6] , [9] , [20] , [21] , [22] , [23] , [24] , [25] , followed by North America (n = 5) [26] , [27] , [28] , [29] , [30] , Europe (n = 2) [7] , [31] , Africa (n = 2) [19] , [32] , and Australia (n = 1) [33] . A summary of the characteristics of the included studies is provided in Table 1 .…”