Idiopathic retroperitoneal fibrosis. Report of 12 cases

1. Martín-Marquina, A.
2. Rodríguez-Rubio, F.I.
3. Abad, J.I.
4. Rosell, D.
5. Robles, J.E.
6. Zudaire, J.J.
7. Berián, J.M.