“…Of the 38 included studies, 16 were conducted in the United Kingdom (UK), 8 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 13 in the United States (US), 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 four in Australia, 71 , 72 , 73 , 74 two in Canada, 75 , 76 and one study in each of Austria, 77 Pakistan, 78 and Slovenia. 79 Thirty-three studies (87%) focused on adults and five (13%) focused on youth.…”