Tumor collision: A frequent problem in renal carcinoma patients

1. Moreno, J.
2. Chicharro, J.
3. Silmi, A.
4. Corral, J.
5. Gomez, A.
6. Ajubita, F.
7. Sambias, H.
8. Senovilla, J.L.
9. Resel, L.