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Retraction Note to: Content validity and psychometric evaluation of functional assessment of chronic illness therapy-fatigue in patients with psoriatic arthritis

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The original article was published in Journal of Patient-Reported Outcomes 2019 3:5

Retraction Note to: J Patient Rep Outcomes

https://doi.org/10.1186/s41687-019-0094-5

The publisher has retracted this article [1] because the incorrect version of the article was published in error. The manuscript has been republished as [2]. Springer Nature apologises to readers.

All authors agree to this retraction.

References

  1. 1.

    Cella et al. (2019) Journal of Patient-Reported Outcomes 3, 5. doi: https://doi.org/10.1186/s41687-019-0094-5.

  2. 2.

    Cella et al. (2019) Journal of Patient-Reported Outcomes 3, 30. doi: https://doi.org/10.1186/s41687-019-0115-4.

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Author information

Correspondence to David Cella.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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