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Discriminant validity, responsiveness and reliability of the arthritis-specific Work Productivity Survey assessing workplace and household productivity within and outside the home in patients with axial spondyloarthritis, including nonradiographic axial spondyloarthritis and ankylosing spondylitis

Jane T Osterhaus* and Oana Purcaru

Arthritis Research & Therapy 2014, 16:R164  doi:10.1186/ar4680

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