“…Over half were published after 2005 (n = 50) [ 10 , 21 – 23 , 25 – 39 , 44 , 46 – 48 , 51 , 53 , 55 – 58 , 60 – 62 , 64 – 66 , 68 , 69 , 71 , 74 , 77 , 78 , 80 , 81 , 84 – 86 , 88 , 90 – 92 , 96 , 98 , 99 , 106 ]. Over three quarters of independent studies were conducted in the USA (n = 48) [ 21 , 24 , 31 , 33 , 36 – 38 , 40 – 43 , 47 , 51 , 54 , 55 , 57 , 58 , 62 , 63 , 65 – 67 , 70 , 71 , 73 , 75 , ...…”