“…Fifty-nine included studies were conducted in North America (45%) [ 15 , 17 , 30 , 33 – 35 , 38 , 39 , 42 , 43 , 46 , 49 – 51 , 54 , 56 , 60 – 62 , 66 , 67 , 69 , 71 , 75 , 76 , 78 , 79 , 82 – 84 , 87 , 88 , 91 , 94 – 96 , 98 – 105 , 107 , 108 , 114 – 116 , 118 – 122 , 124 , 128 , 129 , 136 , 137 ], 18 in Europe (14%) [ 16 , 24 , 26 , 27 , 53 , 57 – 59 , 74 , 77 , 85 , 86 , 111 , 113 , 117 , 125 , 127 , 142 ], 18 in Asia (14%) [ 19 , 28 , 29 , 48 , 55 , 65 , 68 , 73 ,…”