“…The authors of three reviews (Stergiopoulos et al, 2011; Chen et al, 2014; Thomaes et al, 2014) had reported their search strategies in such a manner that we could answer the critical appraisal question: “Do you think all the important, relevant studies were included?” with “Yes”. For four reviews (Zantvoord et al, 2013; Cusack et al, 2016; Swan et al, 2017; Torchalla and Strehlau, 2017), it was unclear whether the reported search strategy had found all important, relevant studies; for two of these, Cusack et al (2016) and Zantvoord et al (2013), we were unable to access the full search strategy. We answered the question with “No” for thirteen of the reviews (Lapp et al, 2010; Goodson et al, 2011; Haugen et al, 2012; Ho and Lee, 2012; Mello et al, 2013; Watts et al, 2013; Ehring et al, 2014; Jong et al, 2014; Chen et al, 2015; Haagen et al, 2015; Erford et al, 2016; Lenz et al, 2017; Tribe et al, 2017).…”