From: Appendix F, Risk of Bias
![Cover of Anxiety in Children](/corehtml/pmc/pmcgifs/bookshelf/thumbs/th-cer192-lrg.png)
Anxiety in Children [Internet].
Comparative Effectiveness Reviews, No. 192.
Wang Z, Whiteside S, Sim L, et al.
Rockville (MD): Agency for Healthcare Research and Quality (US); 2017 Aug.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.