“…The terms sex, gender and/or related terms were mentioned in almost all of the included studies: 83 (95.4%) [ 51 , 52 , 54 – 59 , 64 – 68 , 70 – 79 , 82 , 95 – 106 , 109 – 118 , 123 – 130 , 134 , 135 , 137 , 138 ]. Neither sex nor gender was mentioned in 29 (33.3%) studies [ 53 , 67 , 69 , 72 – 76 , 78 , 81 , 84 , 86 , 90 , 92 – 94 , 100 , 102 , 108 , 109 , 111 , 113 , 115 , 116 , 123 , 127 , 136 – 138 ]. Neither sex, gender nor any related term was mentioned in four (4.6%) studies [ 53 , 69 , 81 , 136 ] ( Table 1 ).…”