Logo of nihpaAbout Author manuscriptsSubmit a manuscriptHHS Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
PMC full text:
Spine (Phila Pa 1976). Author manuscript; available in PMC 2016 Feb 15.
Published in final edited form as:
Spine (Phila Pa 1976). 2015 Feb 15; 40(4): 209–217.
doi:  10.1097/BRS.0000000000000724
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Figure 1

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CONSORT study participant flow diagram.