“…The delivery devices used include the use of screens in most of the studies (100/114, 87.7%) [ 8 , 9 , 14 , 35 - 47 , 49 - 51 , 53 - 56 , 58 , 59 , 61 - 69 , 71 , 73 - 79 , 81 , 83 - 86 , 88 - 91 , 93 - 95 , 97 - 104 , 106 - 117 , 119 - 129 , 131 - 138 , 140 - 144 , 146 , 147 , 151 , 156 - 159 , 161 - 166 , 168 , 170 , 171 ], headset (13/114, 11.4%) [ 48 , 57 , 70 , 80 , 82 , 87 , 92 , 95 , 96 , 105 , 118 , 145 , 153 , 155 , 167 , 172 ], and 3D projector with stereoscopic glasses (1/114, 0.9%) [ 72 ] (Figure S2 in Multimedia Appendix 3 ).…”