Erlotinib versus pemetrexed for pretreated non-squamous non-small cell lung cancer patients in clinical practice

1. Zugazagoitia, J.
2. Puente, J.
3. González-Larriba, J.L.
4. Manzano, A.
5. Sotelo, M.
6. Hernández, S.
7. Sanz, J.
8. Pérez, P.
9. Diáz-Rubio, E.