“…A total of 1489 studies were identified through databases and reference searching and after removal of 642 duplicates, 847 studies were screened. Hence, 32 studies [ [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] , [45] , [46] ] (all cross-sectional) were included in this systematic review. Characteristics of the 32 cross-sectional included studies can be found in Table 1 .…”