Trends over time in the size and quality of randomised controlled Trials of interventions for chronic low-back pain

N. Henschke, T. Kuijpers, S.M. Rubinstein, M. Van Middelkoop, R. Ostelo, A. Verhagen, B.W. Koes, M.W. Van Tulder

Research output: Contribution to JournalArticleAcademicpeer-review

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