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Competing interests Dr Braun and Dr Sieper have held consultancies and received research honoraria, speaker’s honoraria and grants/research support from Centocor, Schering-Plough, Essex Pharma, Wyeth and Abbott. Dr Zeidler has received speaker’s honoraria from Essex Pharma. Dr Burmester has held consultancies for Centocor, Essex Pharma, Wyeth and Abbott; has received honoraria from Centocor, Essex Pharma, Wyeth and Abbott; has been a member of a speaker’s bureau for Centocor, Essex Pharma, Wyeth and Abbott; and has received grants/research support from Centocor, Essex Pharma and Abbott. The other authors declare no conflicts of interest.

arthritis research

Correction: Clinical response to discontinuation of anti-TNF therapy in patients with ankylosing spondylitis after 3 years of continuous treatment with infliximab