“…Twenty‐four (96%) of the studies had good selection, and 12 studies (48%) were assessed as having good comparability using the Newcastle‐Ottawa Scale assessment tool (Table S5). Thirteen of the twenty‐five studies (52%) exhibited a study level “good” quality assessment, 21–23,27–30,32,33,37,41–43 eight (32%) “fair” quality, 20,25,31,35,38–40,44 and four (20%) “unclear” quality, 24,26,34,36 and none of the included studies were found to be of “poor” quality.…”