First-line single-agent panitumumab in frail elderly patients with wild-type KRAS metastatic colorectal cancer and poor prognostic factors: A phase II study of the Spanish cooperative group for the treatment of digestive tumours

1. Sastre, J.
2. Massuti, B.
3. Pulido, G.
4. Guillén-Ponce, C.
5. Benavides, M.
6. Manzano, J.L.
7. Reboredo, M.
8. Rivera, F.
9. Grávalos, C.
10. Safont, M.J.
11. Martínez Villacampa, M.
12. Llovet, P.
13. Dotor, E.
14. Díaz-Rubio, E.
15. Aranda, E.