American College of Rheumatology hybrid analysis of certolizumab pegol plus methotrexate in patients with active rheumatoid arthritis: data from a 52-week phase III trial.
van Vollenhoven RF, Felson D, Strand V, Weinblatt ME, Luijtens K, Keystone EC. American College of Rheumatology hybrid analysis of certolizumab pegol plus methotrexate in patients with active rheumatoid arthritis: data from a 52-week phase III trial. Arthritis Care Res (Hoboken). 2011 Jan; 63(1):128-34.