A definition for aggressive disease in patients with HER-2 negative metastatic breast cancer: an expert consensus of the Spanish Society of Medical Oncology (SEOM)

1. González, A.
2. Lluch, A.
3. Aba, E.
4. Albanell, J.
5. Antón, A.
6. Álvarez, I.
7. Ayala, F.
8. Barnadas, A.
9. Calvo, L.
10. Ciruelos, E.
11. Cortés, J.
12. de la Haba, J.
13. López-Vega, J.M.
14. Martínez, E.
15. Muñoz, M.
16. Peláez, I.
17. Redondo, A.
18. Rodríguez, Á.
19. Rodríguez, C.A.
20. Ruíz, A.
21. Llombart, A.