“…In full text screening, the eligibility criteria (see Appendix S3 ) was applied to 85 studies, after which 54 works needed to be excluded. The 31 studies met eligibility criteria (11 randomized controlled trials [RCTs], 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 17 PC studies [PCs] 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 and 3 prospective case–control studies [CCs] 54 , 55 , 56 of which seven works 28 , 41 , 42 , 43 , 44 , 45 , 56 were included from the previous review). 9 The detailed selection process, describing the in‐ and exclusion (with reasons) of retrieved studies, is outlined in Figure 1 .…”