Sieper, J ; Rudwaleit, M ; van der Heijde, D...
Landewé R, Rudwaleit M, van der Heijde D et al. Effect of Certolizumab Pegol over 48 Weeks in Patients with Axial Spondyloarthritis, including Ankylosing Spondylitis and Non-Radiographic Axial Spondyloarthritis. Arthritis Rheum. 2013;65(10):S767.  , 2014