From: Appendix F, Quality Assessment
Noninvasive Treatments for Low Back Pain [Internet].
Comparative Effectiveness Reviews, No. 169.
Chou R, Deyo R, Friedly J, et al.
Rockville (MD): Agency for Healthcare Research and Quality (US); 2016 Feb.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.