Update 2011: leflunomide in rheumatoid arthritis – strengths and weaknesses Behrens, Frank; Koehm, Michaela; Burkhardt, Harald Behrens, Frank; Koehm, Michaela; Burkhardt, Harald Less Current Opinion in Rheumatology. 23(3):282-287, May 2011. Abstract Abstract Favorites PDF Get Content & Permissions Buy