“…We could not determine the inclusion or exclusion criteria the researchers used to recruit participants in a large proportion of the studies (n = 31) [45,[47][48][49][50]52,53,55,56,[58][59][60][61][62][63][64][65][66][67][69][70][71]75,77,78,81,82,84,85,87,88]. Lastly, 42 studies did not state, and for some studies, we could not determine, whether the experimenters reviewing the outcome variables were blinded to the participants' exposure, meaning only 5 studies did this [57,74,79,90,91,108].…”