Use of combination of leflunomide with biological agents in treatment of rheumatoid arthritis

1. Kalden, J.R.
2. Antoni, C.
3. Álvaro-Gracia, J.M.
4. Combe, B.
5. Emery, P.
6. Kremer, J.M.
7. Strand, C.V.
8. Van Riel, P.L.C.M.
9. Smolen, J.S.