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Is IL-6 an appropriate target to treat spondyloarthritis patients refractory to anti-TNF therapy? a multicentre retrospective observational study

Fernando Kemta Lekpa, Cécile Poulain, Daniel Wendling, Martin Soubrier, Michel De Bandt, Jean Marie Berthelot, Philippe Gaudin, Eric Toussirot, Philippe Goupille, Thao Pham, Jérémie Sellam, Rémy Bruckert, Muriel Paul, Valérie Farrenq, Pascal Claudepierre* and the Club Rhumatismes et Inflammation

Arthritis Research & Therapy 2012, 14:R53  doi:10.1186/ar3766