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.
CITATION STYLE
Cella, D., Wilson, H., Shalhoub, H., Revicki, D. A., Cappelleri, J. C., Bushmakin, A. G., … Hsu, M. A. (2019, December 1). Retraction Note to: Content validity and psychometric evaluation of functional assessment of chronic illness therapy-fatigue in patients with psoriatic arthritis (Journal of Patient-Reported Outcomes, (2019), 3, 1, (5), 10.1186/s41687-019-0094-5). Journal of Patient-Reported Outcomes. Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1186/s41687-019-0125-2
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