Impact of obesity on the response to tumor necrosis factor inhibitors in axial spondyloarthritis oleh Raphael Micheroli, Monika Hebeisen, Lukas M. Wildi, Pascale Exer, Giorgio Tamborrini, Jürg Bernhard, Burkhard Möller, Pascal Zufferey, Michael J. Nissen, Almut Scherer, Adrian Ciurea, on behalf of the Rheumatologists of the Swiss Clinical Quality Management Program