Clinical features of late-onset ankylosing spondylitis: Comparison with early-onset disease

1. Montilla, C.
2. Del Pino-Montes, J.
3. Collantes-Estevez, E.
4. Font, P.
5. Zarco, P.
6. Mulero, J.
7. Gratacós, J.
8. Rodríguez, C.
9. Juanola, X.
10. Fernández-Sueiro, J.L.
11. Almodovar, R.