Pragmatic and Observational Research

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Efficacy and effectiveness trials have different goals, use different tools, and generate different messages [Corrigendum] Porzsolt F, Rocha NG, Toledo-Arruda AC, et al. Pragmatic and Observational Research. 2015;6:47–54. The authors wish to advise that the Introduction section is missing this final sentence: on page 48, left column, line 34, “A short movie provides additional information on this topic https://drive. google.com/file/d/0B9MPdcimmmmpQkQ0cjdKNDk0R0U/ view”.

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Pragmatic and Observational Research

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http://dx.doi.org/10.2147/POR.S100784