“…The average sample size for the HIC studies were 12,355 ranging from 32 [ 34 ] to 25,2425 [ 30 ], while average sample size for the LMIC were 745,050 ranging from 490 [ 57 ] to 32,898 [ 51 ]. The studies were conducted in the following countries: United States of America (USA) ( n = 17) [ 27 , 32 , 34 , 35 , 46 , 48 , 49 , 50 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 ], Canada ( n = 6) [ 31 , 36 , 44 , 67 , 68 , 69 ], Brazil ( n = 4) [ 42 , 51 , 53 , 54 ], Switzerland ( n = 4) [ 29 , 37 , 40 , 43 ], Australia ( n = 3) [ 70 , 71 , 72 ], China ( n = 2) [ 55 , 58 ], Belgium ( n = 2) [ 38 , 73 ], Spain ( n = 2) [ 30 , 47 ], Denmark ( n = 1) [ 28 ], Egypt ( n = 1) [ 52 ], Germany ( n = 1) [ 74 ], Greenland ( ...…”