Effectiveness of disease-modifying antirheumatic drug co-therapy with methotrexate and leflunomide in rituximab-treated rheumatoid arthritis patients: Results of a 1-year follow-up study from the CERERRA collaboration

1. Chatzidionysiou, K.
2. Lie, E.
3. Nasonov, E.
4. Lukina, G.
5. Hetland, M.L.
6. Tarp, U.
7. Van Riel, P.L.C.M.
8. Nordström, D.C.
9. Gomez-Reino, J.
10. Pavelka, K.
11. Tomsic, M.
12. Kvien, T.K.
13. Van Vollenhoven, R.F.
14. Gabay, C.