SEARCH

SEARCH BY CITATION

FilenameFormatSizeDescription
obr12006-sup-0001-si.docx22K

Table S1. Data extraction form.

Table S2. The Cochrane Back Review Group guidelines for assessing risk of bias (Furlan et al. [26]).

Table S3. Levels of Evidence (van Tulder et al. [28]).

Appendix S1. List of excluded studies.

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.