Ankylosing spondylitis patients at risk of poor radiographic outcome show diminishing spinal radiographic progression during long-term treatment with TNF-α inhibitors

• Fiona Maas ,

  * E-mail: f.maas@umcg.nl

  Affiliation Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

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• Suzanne Arends,

  Affiliations Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands, Rheumatology, Medical Center Leeuwarden, Leeuwarden, The Netherlands

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• Freke R. Wink,

  Affiliation Rheumatology, Medical Center Leeuwarden, Leeuwarden, The Netherlands

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• Reinhard Bos,

  Affiliation Rheumatology, Medical Center Leeuwarden, Leeuwarden, The Netherlands

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• Hendrika Bootsma,

  Affiliation Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

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• Elisabeth Brouwer,

  Affiliation Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

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• Anneke Spoorenberg

  Affiliations Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands, Rheumatology, Medical Center Leeuwarden, Leeuwarden, The Netherlands

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