The EULAR Study Group for Registers and Observational Drug Studies: Comparability of the patient case mix in the European biologic disease modifying anti-rheumatic drug registers

1. Kearsley-Fleet, L.
2. Závada, J.
3. Hetland, M.L.
4. Nordström, D.C.
5. Aaltonen, K.J.
6. Listing, J.
7. Zink, A.
8. Gati, T.
9. Rojkovich, B.
10. Iannone, F.
11. Gremese, E.
12. van Riel, P.L.C.M.
13. van de Laar, M.A.F.J.
14. Lie, E.
15. Kvien, T.K.
16. Canhão, H.
17. Fonseca, J.E.
18. Rotar, Ž.
19. Loza, E.
20. Carmona, L.
21. Askling, J.
22. Johansson, K.
23. Finckh, A.
24. Dixon, W.G.
25. Hyrich, K.L.