An Observational Study on The Correlation Between Time of Initiation of Avastin (Bevacizumab) Treatment And Progression-Free Survival in Patients With Metastatic Breast Cancer (CRONOS 2)
The Correlation Between the Moment of Bevacizumab theRapy initiatiOn and the Efficacy in patieNt With Metastatic Breast Cancer Treated With First Line Regimens Based On AvaStin