The European Scleroderma Trials and Research group (EUSTAR) task force for the development of revised activity criteria for systemic sclerosis: Derivation and validation of a preliminarily revised EUSTAR activity index

1. Valentini, G.
2. Iudici, M.
3. Walker, U.A.
4. Jaeger, V.K.
5. Baron, M.
6. Carreira, P.
7. Czirják, L.
8. Denton, C.P.
9. Distler, O.
10. Hachulla, E.
11. Herrick, A.L.
12. Kowal-Bielecka, O.
13. Pope, J.
14. Möller-Ladner, U.
15. Riemekasten, G.
16. Avouac, J.
17. Frerix, M.
18. Jordan, S.
19. Minier, T.
20. Siegert, E.
21. Ong, V.H.
22. Vettori, S.
23. Allanore, Y.