Selective costimulation modulation using abatacept in patients with active rheumatoid arthritis while receiving etanercept: a randomised clinical trial
Michael Weinblatt, Michael Schiff, Allan Goldman, Joel Kremer, Michael Luggen, Tracy Li, Dalei Chen, Jean-Claude Becker
Annals of the Rheumatic Diseases Feb 2007, 66 (2) 228-234; DOI: 10.1136/ard.2006.055111