high, or unclear risk using the specifically described
guideline for each domain (Higgins, Altman, Gøtzsche,
et al., 2011; Higgins, Altman, & Sterne, 2011). The raters
discussed each domain of the assessment tool to apply
consistent judgment. If ratings differed, the rationale for the
rating was discussed, the study was re-reviewed in order to
reach consensus.