First-line single-agent cetuximab in elderly patients with metastatic colorectal cancer. A phase II clinical and molecular study of the Spanish group for digestive tumor therapy (TTD)

1. Sastre, J.
2. Aranda, E.
3. Grávalos, C.
4. Massutí, B.
5. Varella-Garcia, M.
6. Rivera, F.
7. Soler, G.
8. Carrato, A.
9. Manzano, J.L.
10. Díaz-Rubio, E.
11. Hidalgo, M.